diff --git a/pkg/apis/pipeline/v1beta1/result_defaults.go b/pkg/apis/pipeline/v1beta1/result_defaults.go
new file mode 100644
index 00000000000..28cdc21cfa3
--- /dev/null
+++ b/pkg/apis/pipeline/v1beta1/result_defaults.go
@@ -0,0 +1,24 @@
+/*
+Copyright 2022 The Tekton Authors
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1beta1
+
+import "context"
+
+// SetDefaults set the default type for TaskResult
+func (tr *TaskResult) SetDefaults(ctx context.Context) {
+	if tr != nil && tr.Type == "" {
+		// ResultsTypeString is the default value
+		tr.Type = ResultsTypeString
+	}
+}
diff --git a/pkg/apis/pipeline/v1beta1/result_types.go b/pkg/apis/pipeline/v1beta1/result_types.go
new file mode 100644
index 00000000000..0411aaa753a
--- /dev/null
+++ b/pkg/apis/pipeline/v1beta1/result_types.go
@@ -0,0 +1,55 @@
+/*
+Copyright 2022 The Tekton Authors
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1beta1
+
+// TaskResult used to describe the results of a task
+type TaskResult struct {
+	// Name the given name
+	Name string `json:"name"`
+
+	// Type is the user-specified type of the result. The possible type
+	// is currently "string" and will support "array" in following work.
+	Type ResultsType `json:"type,omitempty"`
+
+	// Description is a human-readable description of the result
+	// +optional
+	Description string `json:"description"`
+}
+
+// TaskRunResult used to describe the results of a task
+type TaskRunResult struct {
+	// Name the given name
+	Name string `json:"name"`
+
+	// Type is the user-specified type of the result. The possible type
+	// is currently "string" and will support "array" in following work.
+	// +optional
+	Type ResultsType `json:"type,omitempty"`
+
+	// Value the given value of the result
+	Value string `json:"value"`
+}
+
+// ResultsType indicates the type of a result;
+// Used to distinguish between a single string and an array of strings.
+// TODO: add "array" and "object" support
+type ResultsType string
+
+// Valid ResultsType:
+const (
+	ResultsTypeString ResultsType = "string"
+)
+
+// AllResultsTypes can be used for ResultsTypes validation.
+var AllResultsTypes = map[ResultsType]bool{ResultsTypeString: true}
diff --git a/pkg/apis/pipeline/v1beta1/result_validation.go b/pkg/apis/pipeline/v1beta1/result_validation.go
new file mode 100644
index 00000000000..c8b36229572
--- /dev/null
+++ b/pkg/apis/pipeline/v1beta1/result_validation.go
@@ -0,0 +1,35 @@
+/*
+Copyright 2022 The Tekton Authors
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1beta1
+
+import (
+	"context"
+	"fmt"
+
+	"knative.dev/pkg/apis"
+)
+
+// Validate implements apis.Validatable
+func (tr TaskResult) Validate(_ context.Context) *apis.FieldError {
+	if !resultNameFormatRegex.MatchString(tr.Name) {
+		return apis.ErrInvalidKeyName(tr.Name, "name", fmt.Sprintf("Name must consist of alphanumeric characters, '-', '_', and must start and end with an alphanumeric character (e.g. 'MyName',  or 'my-name',  or 'my_name', regex used for validation is '%s')", ResultNameFormat))
+	}
+	// Validate the result type
+	if tr.Type != "" {
+		if _, ok := AllResultsTypes[tr.Type]; !ok {
+			return apis.ErrInvalidValue(tr.Type, "type", fmt.Sprintf("type must be string"))
+		}
+	}
+	return nil
+}