diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9bfb1a5723e5..25192f6c2685 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -161,6 +161,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Client Breaking Changes
 
+* [\#11797](https://github.com/cosmos/cosmos-sdk/pull/11797) Remove all RegisterRESTRoutes (previously deprecated)
 * [\#11089](https://github.com/cosmos/cosmos-sdk/pull/11089]) interacting with the node through `grpc.Dial` requires clients to pass a codec refer to [doc](docs/run-node/interact-node.md).
 * [\#9594](https://github.com/cosmos/cosmos-sdk/pull/9594) Remove legacy REST API. Please see the [REST Endpoints Migration guide](https://docs.cosmos.network/master/migrations/rest.html) to migrate to the new REST endpoints.
 * [\#9995](https://github.com/cosmos/cosmos-sdk/pull/9995) Increased gas cost for creating proposals.
diff --git a/docs/building-modules/module-manager.md b/docs/building-modules/module-manager.md
index e2a5588b3129..b3e4094e711a 100644
--- a/docs/building-modules/module-manager.md
+++ b/docs/building-modules/module-manager.md
@@ -38,7 +38,6 @@ Let us go through the methods:
 * `RegisterInterfaces(codectypes.InterfaceRegistry)`: Registers a module's interface types and their concrete implementations as `proto.Message`.
 * `DefaultGenesis(codec.JSONCodec)`: Returns a default [`GenesisState`](./genesis.md#genesisstate) for the module, marshalled to `json.RawMessage`. The default `GenesisState` need to be defined by the module developer and is primarily used for testing.
 * `ValidateGenesis(codec.JSONCodec, client.TxEncodingConfig, json.RawMessage)`: Used to validate the `GenesisState` defined by a module, given in its `json.RawMessage` form. It will usually unmarshall the `json` before running a custom [`ValidateGenesis`](./genesis.md#validategenesis) function defined by the module developer.
-* `RegisterRESTRoutes(client.Context, *mux.Router)`: Registers the REST routes for the module. These routes will be used to map REST request to the module in order to process them. See [gRPC and REST](../core/grpc_rest.md) for more.
 * `RegisterGRPCGatewayRoutes(client.Context, *runtime.ServeMux)`: Registers gRPC routes for the module.
 * `GetTxCmd()`: Returns the root [`Tx` command](./module-interfaces.md#tx) for the module. The subcommands of this root command are used by end-users to generate new transactions containing [`message`s](./messages-and-queries.md#queries) defined in the module.
 * `GetQueryCmd()`: Return the root [`query` command](./module-interfaces.md#query) for the module. The subcommands of this root command are used by end-users to generate new queries to the subset of the state defined by the module.
@@ -115,7 +114,6 @@ It implements the following methods:
 * `RegisterInterfaces(registry codectypes.InterfaceRegistry)`: Registers interface types and implementations of each of the application's `AppModuleBasic`.
 * `DefaultGenesis(cdc codec.JSONCodec)`: Provides default genesis information for modules in the application by calling the [`DefaultGenesis(cdc codec.JSONCodec)`](./genesis.md#defaultgenesis) function of each module. It is used to construct a default genesis file for the application.
 * `ValidateGenesis(cdc codec.JSONCodec, txEncCfg client.TxEncodingConfig, genesis map[string]json.RawMessage)`: Validates the genesis information modules by calling the [`ValidateGenesis(codec.JSONCodec, client.TxEncodingConfig, json.RawMessage)`](./genesis.md#validategenesis) function of each module.
-* `RegisterRESTRoutes(ctx client.Context, rtr *mux.Router)`: Registers REST routes for modules by calling the [`RegisterRESTRoutes`](./module-interfaces.md#register-routes) function of each module. This function is usually called function from the `main.go` function of the [application's command-line interface](../core/cli.md).
 * `RegisterGRPCGatewayRoutes(clientCtx client.Context, rtr *runtime.ServeMux)`: Registers gRPC routes for modules.
 * `AddTxCommands(rootTxCmd *cobra.Command)`: Adds modules' transaction commands to the application's [`rootTxCommand`](../core/cli.md#transaction-commands). This function is usually called function from the `main.go` function of the [application's command-line interface](../core/cli.md).
 * `AddQueryCommands(rootQueryCmd *cobra.Command)`: Adds modules' query commands to the application's [`rootQueryCommand`](../core/cli.md#query-commands). This function is usually called function from the `main.go` function of the [application's command-line interface](../core/cli.md).
diff --git a/simapp/app.go b/simapp/app.go
index b592b1eb3cf6..3d5ea67e5c0d 100644
--- a/simapp/app.go
+++ b/simapp/app.go
@@ -580,8 +580,7 @@ func (app *SimApp) RegisterAPIRoutes(apiSvr *api.Server, apiConfig config.APICon
 	// Register new tendermint queries routes from grpc-gateway.
 	tmservice.RegisterGRPCGatewayRoutes(clientCtx, apiSvr.GRPCGatewayRouter)
 
-	// Register legacy and grpc-gateway routes for all modules.
-	ModuleBasics.RegisterRESTRoutes(clientCtx, apiSvr.Router)
+	// Register grpc-gateway routes for all modules.
 	ModuleBasics.RegisterGRPCGatewayRoutes(clientCtx, apiSvr.GRPCGatewayRouter)
 
 	// register swagger API from root so that other applications can override easily
diff --git a/tests/mocks/types_module_module.go b/tests/mocks/types_module_module.go
index 772dc5de6ebe..5a07c7563d61 100644
--- a/tests/mocks/types_module_module.go
+++ b/tests/mocks/types_module_module.go
@@ -14,7 +14,6 @@ import (
 	types0 "github.com/cosmos/cosmos-sdk/types"
 	module "github.com/cosmos/cosmos-sdk/types/module"
 	gomock "github.com/golang/mock/gomock"
-	mux "github.com/gorilla/mux"
 	runtime "github.com/grpc-ecosystem/grpc-gateway/runtime"
 	cobra "github.com/spf13/cobra"
 	types1 "github.com/tendermint/tendermint/abci/types"
@@ -135,18 +134,6 @@ func (mr *MockAppModuleBasicMockRecorder) RegisterLegacyAminoCodec(arg0 interfac
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "RegisterLegacyAminoCodec", reflect.TypeOf((*MockAppModuleBasic)(nil).RegisterLegacyAminoCodec), arg0)
 }
 
-// RegisterRESTRoutes mocks base method.
-func (m *MockAppModuleBasic) RegisterRESTRoutes(arg0 client.Context, arg1 *mux.Router) {
-	m.ctrl.T.Helper()
-	m.ctrl.Call(m, "RegisterRESTRoutes", arg0, arg1)
-}
-
-// RegisterRESTRoutes indicates an expected call of RegisterRESTRoutes.
-func (mr *MockAppModuleBasicMockRecorder) RegisterRESTRoutes(arg0, arg1 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "RegisterRESTRoutes", reflect.TypeOf((*MockAppModuleBasic)(nil).RegisterRESTRoutes), arg0, arg1)
-}
-
 // ValidateGenesis mocks base method.
 func (m *MockAppModuleBasic) ValidateGenesis(arg0 codec.JSONCodec, arg1 client.TxEncodingConfig, arg2 json.RawMessage) error {
 	m.ctrl.T.Helper()
@@ -304,18 +291,6 @@ func (mr *MockAppModuleGenesisMockRecorder) RegisterLegacyAminoCodec(arg0 interf
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "RegisterLegacyAminoCodec", reflect.TypeOf((*MockAppModuleGenesis)(nil).RegisterLegacyAminoCodec), arg0)
 }
 
-// RegisterRESTRoutes mocks base method.
-func (m *MockAppModuleGenesis) RegisterRESTRoutes(arg0 client.Context, arg1 *mux.Router) {
-	m.ctrl.T.Helper()
-	m.ctrl.Call(m, "RegisterRESTRoutes", arg0, arg1)
-}
-
-// RegisterRESTRoutes indicates an expected call of RegisterRESTRoutes.
-func (mr *MockAppModuleGenesisMockRecorder) RegisterRESTRoutes(arg0, arg1 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "RegisterRESTRoutes", reflect.TypeOf((*MockAppModuleGenesis)(nil).RegisterRESTRoutes), arg0, arg1)
-}
-
 // ValidateGenesis mocks base method.
 func (m *MockAppModuleGenesis) ValidateGenesis(arg0 codec.JSONCodec, arg1 client.TxEncodingConfig, arg2 json.RawMessage) error {
 	m.ctrl.T.Helper()
@@ -553,18 +528,6 @@ func (mr *MockAppModuleMockRecorder) RegisterLegacyAminoCodec(arg0 interface{})
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "RegisterLegacyAminoCodec", reflect.TypeOf((*MockAppModule)(nil).RegisterLegacyAminoCodec), arg0)
 }
 
-// RegisterRESTRoutes mocks base method.
-func (m *MockAppModule) RegisterRESTRoutes(arg0 client.Context, arg1 *mux.Router) {
-	m.ctrl.T.Helper()
-	m.ctrl.Call(m, "RegisterRESTRoutes", arg0, arg1)
-}
-
-// RegisterRESTRoutes indicates an expected call of RegisterRESTRoutes.
-func (mr *MockAppModuleMockRecorder) RegisterRESTRoutes(arg0, arg1 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "RegisterRESTRoutes", reflect.TypeOf((*MockAppModule)(nil).RegisterRESTRoutes), arg0, arg1)
-}
-
 // RegisterServices mocks base method.
 func (m *MockAppModule) RegisterServices(arg0 module.Configurator) {
 	m.ctrl.T.Helper()
diff --git a/types/module/module.go b/types/module/module.go
index e38e6bc78fc0..60c524a39f09 100644
--- a/types/module/module.go
+++ b/types/module/module.go
@@ -33,7 +33,6 @@ import (
 	"fmt"
 	"sort"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -55,7 +54,6 @@ type AppModuleBasic interface {
 	ValidateGenesis(codec.JSONCodec, client.TxEncodingConfig, json.RawMessage) error
 
 	// client functionality
-	RegisterRESTRoutes(client.Context, *mux.Router)
 	RegisterGRPCGatewayRoutes(client.Context, *runtime.ServeMux)
 	GetTxCmd() *cobra.Command
 	GetQueryCmd() *cobra.Command
@@ -108,13 +106,6 @@ func (bm BasicManager) ValidateGenesis(cdc codec.JSONCodec, txEncCfg client.TxEn
 	return nil
 }
 
-// RegisterRESTRoutes registers all module rest routes
-func (bm BasicManager) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router) {
-	for _, b := range bm {
-		b.RegisterRESTRoutes(clientCtx, rtr)
-	}
-}
-
 // RegisterGRPCGatewayRoutes registers all module rest routes
 func (bm BasicManager) RegisterGRPCGatewayRoutes(clientCtx client.Context, rtr *runtime.ServeMux) {
 	for _, b := range bm {
diff --git a/types/module/module_test.go b/types/module/module_test.go
index 4dbb4a73c5b6..4bbae7f4bc26 100644
--- a/types/module/module_test.go
+++ b/types/module/module_test.go
@@ -5,7 +5,6 @@ import (
 	"errors"
 	"testing"
 
-	"github.com/gorilla/mux"
 	"github.com/golang/mock/gomock"
 	"github.com/spf13/cobra"
 	"github.com/stretchr/testify/require"
@@ -13,9 +12,9 @@ import (
 	"github.com/tendermint/tendermint/libs/log"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 
-	"github.com/cosmos/cosmos-sdk/codec/types"
 	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/codec"
+	"github.com/cosmos/cosmos-sdk/codec/types"
 	"github.com/cosmos/cosmos-sdk/tests/mocks"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
@@ -41,7 +40,6 @@ func TestBasicManager(t *testing.T) {
 	mockAppModuleBasic1.EXPECT().ValidateGenesis(gomock.Eq(cdc), gomock.Eq(nil), gomock.Eq(wantDefaultGenesis["mockAppModuleBasic1"])).Times(1).Return(errFoo)
 	mockAppModuleBasic1.EXPECT().RegisterLegacyAminoCodec(gomock.Eq(legacyAmino)).Times(1)
 	mockAppModuleBasic1.EXPECT().RegisterInterfaces(gomock.Eq(interfaceRegistry)).Times(1)
-	mockAppModuleBasic1.EXPECT().RegisterRESTRoutes(gomock.Eq(client.Context{}), gomock.Eq(&mux.Router{})).Times(1)
 	mockAppModuleBasic1.EXPECT().GetTxCmd().Times(1).Return(nil)
 	mockAppModuleBasic1.EXPECT().GetQueryCmd().Times(1).Return(nil)
 
@@ -58,8 +56,6 @@ func TestBasicManager(t *testing.T) {
 
 	require.True(t, errors.Is(errFoo, mm.ValidateGenesis(cdc, nil, wantDefaultGenesis)))
 
-	mm.RegisterRESTRoutes(client.Context{}, &mux.Router{})
-
 	mockCmd := &cobra.Command{Use: "root"}
 	mm.AddTxCommands(mockCmd)
 
diff --git a/x/auth/module.go b/x/auth/module.go
index dfb125058bd9..58f567fa26cf 100644
--- a/x/auth/module.go
+++ b/x/auth/module.go
@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 
 	"github.com/spf13/cobra"
@@ -59,11 +58,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncod
 	return types.ValidateGenesis(data)
 }
 
-// RegisterRESTRoutes registers the REST routes for the auth module.
-// Deprecated: RegisterRESTRoutes is deprecated. `x/auth` legacy REST implementation
-// has been removed from the SDK.
-func (AppModuleBasic) RegisterRESTRoutes(_ client.Context, _ *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the auth module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
 	if err := types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/auth/vesting/module.go b/x/auth/vesting/module.go
index 272ebf2656bf..49925dd61f2c 100644
--- a/x/auth/vesting/module.go
+++ b/x/auth/vesting/module.go
@@ -3,7 +3,6 @@ package vesting
 import (
 	"encoding/json"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -54,10 +53,6 @@ func (AppModuleBasic) ValidateGenesis(_ codec.JSONCodec, _ client.TxEncodingConf
 	return nil
 }
 
-// RegisterRESTRoutes registers the REST routes for the vesting module. Currently, this is a no-op.
-// Deprecated: RegisterRESTRoutes is deprecated.
-func (AppModuleBasic) RegisterRESTRoutes(_ client.Context, _ *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the module's gRPC Gateway routes. Currently, this
 // is a no-op.
 func (a AppModuleBasic) RegisterGRPCGatewayRoutes(_ client.Context, _ *runtime.ServeMux) {}
diff --git a/x/authz/module/module.go b/x/authz/module/module.go
index 219969f34f36..7ff061c691f5 100644
--- a/x/authz/module/module.go
+++ b/x/authz/module/module.go
@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -77,10 +76,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config sdkclient.TxEn
 	return authz.ValidateGenesis(data)
 }
 
-// RegisterRESTRoutes registers the REST routes for the authz module.
-// Deprecated: RegisterRESTRoutes is deprecated.
-func (AppModuleBasic) RegisterRESTRoutes(_ sdkclient.Context, _ *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the authz module.
 func (a AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx sdkclient.Context, mux *runtime.ServeMux) {
 	if err := authz.RegisterQueryHandlerClient(context.Background(), mux, authz.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/bank/module.go b/x/bank/module.go
index bd809816a7a3..bfeee7eed6ba 100644
--- a/x/bank/module.go
+++ b/x/bank/module.go
@@ -7,7 +7,6 @@ import (
 	"math/rand"
 	"time"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -61,11 +60,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, _ client.TxEncodingCo
 	return data.Validate()
 }
 
-// RegisterRESTRoutes registers the REST routes for the bank module.
-// Deprecated: RegisterRESTRoutes is deprecated. `x/bank` legacy REST implementation
-// has been removed from the SDK.
-func (AppModuleBasic) RegisterRESTRoutes(_ client.Context, _ *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the bank module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
 	if err := types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/capability/module.go b/x/capability/module.go
index f8295948d9b7..e2ac1709795c 100644
--- a/x/capability/module.go
+++ b/x/capability/module.go
@@ -6,7 +6,6 @@ import (
 	"math/rand"
 	"time"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 
@@ -68,10 +67,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncod
 	return genState.Validate()
 }
 
-// RegisterRESTRoutes registers the REST routes for the capability module.
-// Deprecated: RegisterRESTRoutes is deprecated.
-func (AppModuleBasic) RegisterRESTRoutes(_ client.Context, _ *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the capability module.
 func (a AppModuleBasic) RegisterGRPCGatewayRoutes(_ client.Context, _ *runtime.ServeMux) {
 }
diff --git a/x/crisis/module.go b/x/crisis/module.go
index 428e8adc1a05..7c058a4f22e0 100644
--- a/x/crisis/module.go
+++ b/x/crisis/module.go
@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"time"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -60,10 +59,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncod
 	return types.ValidateGenesis(&data)
 }
 
-// RegisterRESTRoutes registers REST routes for the crisis module.
-// Deprecated: RegisterRESTRoutes is deprecated.
-func (AppModuleBasic) RegisterRESTRoutes(_ client.Context, _ *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the capability module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(_ client.Context, _ *runtime.ServeMux) {}
 
diff --git a/x/distribution/module.go b/x/distribution/module.go
index 13cf674e3be0..e2f240b1edaf 100644
--- a/x/distribution/module.go
+++ b/x/distribution/module.go
@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -61,11 +60,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config sdkclient.TxEn
 	return types.ValidateGenesis(&data)
 }
 
-// RegisterRESTRoutes registers the REST routes for the distribution module.
-// Deprecated: RegisterRESTRoutes is deprecated. `x/distribution` legacy REST implementation
-// has been removed from the SDK.
-func (AppModuleBasic) RegisterRESTRoutes(_ sdkclient.Context, _ *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the distribution module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx sdkclient.Context, mux *runtime.ServeMux) {
 	if err := types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/evidence/module.go b/x/evidence/module.go
index 2d65ef8ead8a..0dcf1ac3fac3 100644
--- a/x/evidence/module.go
+++ b/x/evidence/module.go
@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -71,11 +70,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncod
 	return gs.Validate()
 }
 
-// RegisterRESTRoutes registers the evidence module's REST service handlers.
-// Deprecated: RegisterRESTRoutes is deprecated. `x/evidence` legacy REST implementation
-// has been removed from the SDK.
-func (AppModuleBasic) RegisterRESTRoutes(_ client.Context, _ *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the evidence module.
 func (a AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
 	if err := types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/feegrant/module/module.go b/x/feegrant/module/module.go
index 2246de692456..6752b16f2331 100644
--- a/x/feegrant/module/module.go
+++ b/x/feegrant/module/module.go
@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -86,10 +85,6 @@ func (a AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config sdkclient.Tx
 	return feegrant.ValidateGenesis(data)
 }
 
-// RegisterRESTRoutes registers the REST routes for the feegrant module.
-// Deprecated: RegisterRESTRoutes is deprecated.
-func (AppModuleBasic) RegisterRESTRoutes(clientCtx sdkclient.Context, rtr *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the feegrant module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx sdkclient.Context, mux *runtime.ServeMux) {
 	if err := feegrant.RegisterQueryHandlerClient(context.Background(), mux, feegrant.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/genutil/module.go b/x/genutil/module.go
index db3071ca00c7..9b91849b68c0 100644
--- a/x/genutil/module.go
+++ b/x/genutil/module.go
@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 
@@ -53,10 +52,6 @@ func (b AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, txEncodingConfig cl
 	return types.ValidateGenesis(&data, txEncodingConfig.TxJSONDecoder())
 }
 
-// RegisterRESTRoutes registers the REST routes for the genutil module.
-// Deprecated: RegisterRESTRoutes is deprecated.
-func (AppModuleBasic) RegisterRESTRoutes(_ client.Context, _ *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the genutil module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(_ client.Context, _ *runtime.ServeMux) {
 }
diff --git a/x/gov/module.go b/x/gov/module.go
index 875c00437752..b93dab8f1f0a 100644
--- a/x/gov/module.go
+++ b/x/gov/module.go
@@ -8,7 +8,6 @@ import (
 	"fmt"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -74,11 +73,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncod
 	return v1.ValidateGenesis(&data)
 }
 
-// RegisterRESTRoutes registers the REST routes for the gov module.
-// Deprecated: RegisterRESTRoutes is deprecated. `x/gov` legacy REST implementation
-// has been removed from the SDK.
-func (a AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the gov module.
 func (a AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
 	if err := v1.RegisterQueryHandlerClient(context.Background(), mux, v1.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/group/module/module.go b/x/group/module/module.go
index 086728422ed4..7b8baf8538bf 100644
--- a/x/group/module/module.go
+++ b/x/group/module/module.go
@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -97,10 +96,6 @@ func (AppModuleBasic) RegisterInterfaces(registry cdctypes.InterfaceRegistry) {
 // RegisterLegacyAminoCodec registers the group module's types for the given codec.
 func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {}
 
-// RegisterRESTRoutes registers the REST routes for the group module.
-// Deprecated: RegisterRESTRoutes is deprecated.
-func (AppModuleBasic) RegisterRESTRoutes(_ sdkclient.Context, _ *mux.Router) {}
-
 // Name returns the group module's name.
 func (AppModule) Name() string {
 	return group.ModuleName
diff --git a/x/mint/module.go b/x/mint/module.go
index be5ba7fdf2f9..fc32ff67ff05 100644
--- a/x/mint/module.go
+++ b/x/mint/module.go
@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -63,11 +62,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncod
 	return types.ValidateGenesis(data)
 }
 
-// RegisterRESTRoutes registers the REST routes for the mint module.
-// Deprecated: RegisterRESTRoutes is deprecated. `x/mint` legacy REST implementation
-// has been removed from the SDK.
-func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the mint module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
 	if err := types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/nft/module/module.go b/x/nft/module/module.go
index 0b456e55c33c..ab6fc9633cc9 100644
--- a/x/nft/module/module.go
+++ b/x/nft/module/module.go
@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -71,10 +70,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config sdkclient.TxEn
 	return nft.ValidateGenesis(data)
 }
 
-// RegisterRESTRoutes registers the REST routes for the nft module.
-func (AppModuleBasic) RegisterRESTRoutes(clientCtx sdkclient.Context, r *mux.Router) {
-}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the nft module.
 func (a AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx sdkclient.Context, mux *runtime.ServeMux) {
 	if err := nft.RegisterQueryHandlerClient(context.Background(), mux, nft.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/params/module.go b/x/params/module.go
index f17ab2199d44..da4679f8789f 100644
--- a/x/params/module.go
+++ b/x/params/module.go
@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -51,10 +50,6 @@ func (AppModuleBasic) ValidateGenesis(_ codec.JSONCodec, config client.TxEncodin
 	return nil
 }
 
-// RegisterRESTRoutes registers the REST routes for the params module.
-// Deprecated: RegisterRESTRoutes is deprecated.
-func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the params module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
 	if err := proposal.RegisterQueryHandlerClient(context.Background(), mux, proposal.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/slashing/module.go b/x/slashing/module.go
index cf51b57066ad..7627bbf3a0b9 100644
--- a/x/slashing/module.go
+++ b/x/slashing/module.go
@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -68,11 +67,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncod
 	return types.ValidateGenesis(data)
 }
 
-// RegisterRESTRoutes registers the REST routes for the slashing module.
-// Deprecated: RegisterRESTRoutes is deprecated. `x/slashing` legacy REST implementation
-// has been removed from the SDK.
-func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the slashig module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
 	if err := types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/staking/module.go b/x/staking/module.go
index 39665347c994..92aab0885d44 100644
--- a/x/staking/module.go
+++ b/x/staking/module.go
@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"math/rand"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -71,11 +70,6 @@ func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncod
 	return ValidateGenesis(&data)
 }
 
-// RegisterRESTRoutes registers the REST routes for the staking module.
-// Deprecated: RegisterRESTRoutes is deprecated. `x/staking` legacy REST implementation
-// has been removed from the SDK.
-func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the staking module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
 	if err := types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx)); err != nil {
diff --git a/x/upgrade/module.go b/x/upgrade/module.go
index 045d23370586..526e7c791cdc 100644
--- a/x/upgrade/module.go
+++ b/x/upgrade/module.go
@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/json"
 
-	"github.com/gorilla/mux"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -41,11 +40,6 @@ func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
 	types.RegisterLegacyAminoCodec(cdc)
 }
 
-// RegisterRESTRoutes registers the REST routes for the upgrade module.
-// Deprecated: RegisterRESTRoutes is deprecated. `x/upgrade` legacy REST implementation
-// has been removed from the SDK.
-func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router) {}
-
 // RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the upgrade module.
 func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
 	if err := types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx)); err != nil {