diff --git a/cirq-core/cirq/circuits/qasm_output.py b/cirq-core/cirq/circuits/qasm_output.py
index eb3ca16528a..1024938086f 100644
--- a/cirq-core/cirq/circuits/qasm_output.py
+++ b/cirq-core/cirq/circuits/qasm_output.py
@@ -83,6 +83,17 @@ def _decompose_(self, qubits):
     def _value_equality_values_(self):
         return self.lmda, self.theta, self.phi
 
+    def _json_dict_(self) -> Dict[str, float]:
+        return {
+            'theta': self.theta,
+            'phi': self.phi,
+            'lmda': self.lmda,
+        }
+
+    @classmethod
+    def _from_json_dict_(cls, theta: float, phi: float, lmda: float, **kwargs) -> 'QasmUGate':
+        return cls(theta, phi, lmda)
+
 
 @value.value_equality
 class QasmTwoQubitGate(ops.Gate):
diff --git a/cirq-core/cirq/json_resolver_cache.py b/cirq-core/cirq/json_resolver_cache.py
index 6f362dcd52b..a600115ac94 100644
--- a/cirq-core/cirq/json_resolver_cache.py
+++ b/cirq-core/cirq/json_resolver_cache.py
@@ -51,39 +51,35 @@ def _parallel_gate_op(gate, qubits):
     import sympy
 
     return {
-        'AnyIntegerPowerGateFamily': cirq.AnyIntegerPowerGateFamily,
         'AmplitudeDampingChannel': cirq.AmplitudeDampingChannel,
+        'AnyIntegerPowerGateFamily': cirq.AnyIntegerPowerGateFamily,
         'AnyUnitaryGateFamily': cirq.AnyUnitaryGateFamily,
         'AsymmetricDepolarizingChannel': cirq.AsymmetricDepolarizingChannel,
         'BitFlipChannel': cirq.BitFlipChannel,
         'BitstringAccumulator': cirq.work.BitstringAccumulator,
         'BooleanHamiltonian': cirq.BooleanHamiltonian,
-        'ProductState': cirq.ProductState,
         'CCNotPowGate': cirq.CCNotPowGate,
         'CCXPowGate': cirq.CCXPowGate,
         'CCZPowGate': cirq.CCZPowGate,
-        'CNotPowGate': cirq.CNotPowGate,
+        'Circuit': cirq.Circuit,
+        'CircuitOperation': cirq.CircuitOperation,
         'ClassicallyControlledOperation': cirq.ClassicallyControlledOperation,
+        'CliffordState': cirq.CliffordState,
+        'CliffordTableau': cirq.CliffordTableau,
+        'CNotPowGate': cirq.CNotPowGate,
+        'ConstantQubitNoiseModel': cirq.ConstantQubitNoiseModel,
         'ControlledGate': cirq.ControlledGate,
         'ControlledOperation': cirq.ControlledOperation,
+        'CrossEntropyResult': CrossEntropyResult,
+        'CrossEntropyResultDict': CrossEntropyResultDict,
         'CSwapGate': cirq.CSwapGate,
         'CXPowGate': cirq.CXPowGate,
         'CZPowGate': cirq.CZPowGate,
-        'CrossEntropyResult': CrossEntropyResult,
-        'CrossEntropyResultDict': CrossEntropyResultDict,
-        'Circuit': cirq.Circuit,
-        'CircuitOperation': cirq.CircuitOperation,
-        'CliffordState': cirq.CliffordState,
-        'CliffordTableau': cirq.CliffordTableau,
+        'DensePauliString': cirq.DensePauliString,
         'DepolarizingChannel': cirq.DepolarizingChannel,
-        'ConstantQubitNoiseModel': cirq.ConstantQubitNoiseModel,
         'Duration': cirq.Duration,
         'FrozenCircuit': cirq.FrozenCircuit,
         'FSimGate': cirq.FSimGate,
-        'DensePauliString': cirq.DensePauliString,
-        'MutableDensePauliString': cirq.MutableDensePauliString,
-        'MutablePauliString': cirq.MutablePauliString,
-        'ObservableMeasuredResult': cirq.work.ObservableMeasuredResult,
         'GateFamily': cirq.GateFamily,
         'GateOperation': cirq.GateOperation,
         'Gateset': cirq.Gateset,
@@ -109,22 +105,22 @@ def _parallel_gate_op(gate, qubits):
         'MeasurementGate': cirq.MeasurementGate,
         '_MeasurementSpec': cirq.work._MeasurementSpec,
         'Moment': cirq.Moment,
-        '_XEigenState': cirq.value.product_state._XEigenState,  # type: ignore
-        '_YEigenState': cirq.value.product_state._YEigenState,  # type: ignore
-        '_ZEigenState': cirq.value.product_state._ZEigenState,  # type: ignore
+        'MutableDensePauliString': cirq.MutableDensePauliString,
+        'MutablePauliString': cirq.MutablePauliString,
         '_NoNoiseModel': _NoNoiseModel,
         'NamedQubit': cirq.NamedQubit,
         'NamedQid': cirq.NamedQid,
         'NoIdentifierQubit': cirq.testing.NoIdentifierQubit,
+        'ObservableMeasuredResult': cirq.work.ObservableMeasuredResult,
         'OpIdentifier': cirq.OpIdentifier,
-        '_PauliX': cirq.ops.pauli_gates._PauliX,
-        '_PauliY': cirq.ops.pauli_gates._PauliY,
-        '_PauliZ': cirq.ops.pauli_gates._PauliZ,
         'ParamResolver': cirq.ParamResolver,
         'ParallelGate': cirq.ParallelGate,
         'ParallelGateFamily': cirq.ParallelGateFamily,
         'PauliMeasurementGate': cirq.PauliMeasurementGate,
         'PauliString': cirq.PauliString,
+        '_PauliX': cirq.ops.pauli_gates._PauliX,
+        '_PauliY': cirq.ops.pauli_gates._PauliY,
+        '_PauliZ': cirq.ops.pauli_gates._PauliZ,
         'PhaseDampingChannel': cirq.PhaseDampingChannel,
         'PhaseFlipChannel': cirq.PhaseFlipChannel,
         'PhaseGradientGate': cirq.PhaseGradientGate,
@@ -132,39 +128,44 @@ def _parallel_gate_op(gate, qubits):
         'PhasedISwapPowGate': cirq.PhasedISwapPowGate,
         'PhasedXPowGate': cirq.PhasedXPowGate,
         'PhasedXZGate': cirq.PhasedXZGate,
-        'StatePreparationChannel': cirq.StatePreparationChannel,
+        'ProductState': cirq.ProductState,
         'ProjectorString': cirq.ProjectorString,
         'ProjectorSum': cirq.ProjectorSum,
-        'RandomGateChannel': cirq.RandomGateChannel,
+        'QasmUGate': cirq.circuits.qasm_output.QasmUGate,
+        '_QubitAsQid': raw_types._QubitAsQid,
         'QuantumFourierTransformGate': cirq.QuantumFourierTransformGate,
+        'RandomGateChannel': cirq.RandomGateChannel,
         'RepetitionsStoppingCriteria': cirq.work.RepetitionsStoppingCriteria,
         'ResetChannel': cirq.ResetChannel,
+        'Result': cirq.Result,
+        'Rx': cirq.Rx,
+        'Ry': cirq.Ry,
+        'Rz': cirq.Rz,
         'SingleQubitCliffordGate': cirq.SingleQubitCliffordGate,
         'SingleQubitPauliStringGateOperation': cirq.SingleQubitPauliStringGateOperation,
         'SingleQubitReadoutCalibrationResult': cirq.experiments.SingleQubitReadoutCalibrationResult,
         'StabilizerStateChForm': cirq.StabilizerStateChForm,
+        'StatePreparationChannel': cirq.StatePreparationChannel,
         'SwapPowGate': cirq.SwapPowGate,
         'SymmetricalQidPair': cirq.SymmetricalQidPair,
         'TaggedOperation': cirq.TaggedOperation,
         'TiltedSquareLattice': cirq.TiltedSquareLattice,
         'TrialResult': cirq.Result,  # keep support for Cirq < 0.11.
-        'Result': cirq.Result,
-        'Rx': cirq.Rx,
-        'Ry': cirq.Ry,
-        'Rz': cirq.Rz,
         '_UnconstrainedDevice': cirq.devices.unconstrained_device._UnconstrainedDevice,
         'VarianceStoppingCriteria': cirq.work.VarianceStoppingCriteria,
         'VirtualTag': cirq.VirtualTag,
         'WaitGate': cirq.WaitGate,
-        '_QubitAsQid': raw_types._QubitAsQid,
         # The formatter keeps putting this back
         # pylint: disable=line-too-long
         'XEBPhasedFSimCharacterizationOptions': cirq.experiments.XEBPhasedFSimCharacterizationOptions,
         # pylint: enable=line-too-long
+        '_XEigenState': cirq.value.product_state._XEigenState,  # type: ignore
         'XPowGate': cirq.XPowGate,
         'XXPowGate': cirq.XXPowGate,
+        '_YEigenState': cirq.value.product_state._YEigenState,  # type: ignore
         'YPowGate': cirq.YPowGate,
         'YYPowGate': cirq.YYPowGate,
+        '_ZEigenState': cirq.value.product_state._ZEigenState,  # type: ignore
         'ZPowGate': cirq.ZPowGate,
         'ZZPowGate': cirq.ZZPowGate,
         # Old types, only supported for backwards-compatibility
diff --git a/cirq-core/cirq/protocols/json_test_data/QasmUGate.json b/cirq-core/cirq/protocols/json_test_data/QasmUGate.json
new file mode 100644
index 00000000000..7a3f552711c
--- /dev/null
+++ b/cirq-core/cirq/protocols/json_test_data/QasmUGate.json
@@ -0,0 +1,6 @@
+{
+    "cirq_type": "QasmUGate",
+    "theta": 0.1,
+    "phi": 0.2,
+    "lmda": 0.3
+  }
\ No newline at end of file
diff --git a/cirq-core/cirq/protocols/json_test_data/QasmUGate.repr b/cirq-core/cirq/protocols/json_test_data/QasmUGate.repr
new file mode 100644
index 00000000000..d141b58c1fe
--- /dev/null
+++ b/cirq-core/cirq/protocols/json_test_data/QasmUGate.repr
@@ -0,0 +1 @@
+cirq.circuits.qasm_output.QasmUGate(0.1, 0.2, 0.3)
\ No newline at end of file