diff --git a/internal/test/components/components.gen.go b/internal/test/components/components.gen.go
index 95257707b1..0bfc1747e6 100644
--- a/internal/test/components/components.gen.go
+++ b/internal/test/components/components.gen.go
@@ -18,6 +18,20 @@ const (
 	Enum1Two   Enum1 = "Two"
 )
 
+// Valid indicates whether the value is a known member of the Enum1 enum.
+func (e Enum1) Valid() bool {
+	switch e {
+	case Enum1One:
+		return true
+	case Enum1Three:
+		return true
+	case Enum1Two:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for Enum2.
 const (
 	Enum2Four  Enum2 = "Four"
@@ -25,6 +39,20 @@ const (
 	Enum2Two   Enum2 = "Two"
 )
 
+// Valid indicates whether the value is a known member of the Enum2 enum.
+func (e Enum2) Valid() bool {
+	switch e {
+	case Enum2Four:
+		return true
+	case Enum2Three:
+		return true
+	case Enum2Two:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for Enum3.
 const (
 	Enum3Bar      Enum3 = "Bar"
@@ -32,6 +60,20 @@ const (
 	Enum3Foo      Enum3 = "Foo"
 )
 
+// Valid indicates whether the value is a known member of the Enum3 enum.
+func (e Enum3) Valid() bool {
+	switch e {
+	case Enum3Bar:
+		return true
+	case Enum3Enum1One:
+		return true
+	case Enum3Foo:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for Enum4.
 const (
 	Cat   Enum4 = "Cat"
@@ -39,6 +81,20 @@ const (
 	Mouse Enum4 = "Mouse"
 )
 
+// Valid indicates whether the value is a known member of the Enum4 enum.
+func (e Enum4) Valid() bool {
+	switch e {
+	case Cat:
+		return true
+	case Dog:
+		return true
+	case Mouse:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for Enum5.
 const (
 	Enum5N5 Enum5 = 5
@@ -46,6 +102,20 @@ const (
 	Enum5N7 Enum5 = 7
 )
 
+// Valid indicates whether the value is a known member of the Enum5 enum.
+func (e Enum5) Valid() bool {
+	switch e {
+	case Enum5N5:
+		return true
+	case Enum5N6:
+		return true
+	case Enum5N7:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for EnumUnion.
 const (
 	EnumUnionFour  EnumUnion = "Four"
@@ -54,6 +124,22 @@ const (
 	EnumUnionTwo   EnumUnion = "Two"
 )
 
+// Valid indicates whether the value is a known member of the EnumUnion enum.
+func (e EnumUnion) Valid() bool {
+	switch e {
+	case EnumUnionFour:
+		return true
+	case EnumUnionOne:
+		return true
+	case EnumUnionThree:
+		return true
+	case EnumUnionTwo:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for EnumUnion2.
 const (
 	EnumUnion2One   EnumUnion2 = "One"
@@ -62,6 +148,22 @@ const (
 	EnumUnion2Two   EnumUnion2 = "Two"
 )
 
+// Valid indicates whether the value is a known member of the EnumUnion2 enum.
+func (e EnumUnion2) Valid() bool {
+	switch e {
+	case EnumUnion2One:
+		return true
+	case EnumUnion2Seven:
+		return true
+	case EnumUnion2Three:
+		return true
+	case EnumUnion2Two:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for FunnyValues.
 const (
 	FunnyValuesAnd      FunnyValues = "&"
@@ -71,6 +173,24 @@ const (
 	FunnyValuesPercent  FunnyValues = "%"
 )
 
+// Valid indicates whether the value is a known member of the FunnyValues enum.
+func (e FunnyValues) Valid() bool {
+	switch e {
+	case FunnyValuesAnd:
+		return true
+	case FunnyValuesAsterisk:
+		return true
+	case FunnyValuesEmpty:
+		return true
+	case FunnyValuesN5:
+		return true
+	case FunnyValuesPercent:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for EnumParam1.
 const (
 	EnumParam1Both EnumParam1 = "both"
@@ -78,6 +198,20 @@ const (
 	EnumParam1On   EnumParam1 = "on"
 )
 
+// Valid indicates whether the value is a known member of the EnumParam1 enum.
+func (e EnumParam1) Valid() bool {
+	switch e {
+	case EnumParam1Both:
+		return true
+	case EnumParam1Off:
+		return true
+	case EnumParam1On:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for EnumParam2.
 const (
 	EnumParam2Both EnumParam2 = "both"
@@ -85,6 +219,20 @@ const (
 	EnumParam2On   EnumParam2 = "on"
 )
 
+// Valid indicates whether the value is a known member of the EnumParam2 enum.
+func (e EnumParam2) Valid() bool {
+	switch e {
+	case EnumParam2Both:
+		return true
+	case EnumParam2Off:
+		return true
+	case EnumParam2On:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for EnumParam3.
 const (
 	Alice EnumParam3 = "alice"
@@ -92,6 +240,20 @@ const (
 	Eve   EnumParam3 = "eve"
 )
 
+// Valid indicates whether the value is a known member of the EnumParam3 enum.
+func (e EnumParam3) Valid() bool {
+	switch e {
+	case Alice:
+		return true
+	case Bob:
+		return true
+	case Eve:
+		return true
+	default:
+		return false
+	}
+}
+
 // AdditionalPropertiesObject1 Has additional properties of type int
 type AdditionalPropertiesObject1 struct {
 	Id                   int            `json:"id"`
diff --git a/internal/test/externalref/petstore/externalref.gen.go b/internal/test/externalref/petstore/externalref.gen.go
index 33852217e1..e8102f0d28 100644
--- a/internal/test/externalref/petstore/externalref.gen.go
+++ b/internal/test/externalref/petstore/externalref.gen.go
@@ -29,6 +29,20 @@ const (
 	Placed    OrderStatus = "placed"
 )
 
+// Valid indicates whether the value is a known member of the OrderStatus enum.
+func (e OrderStatus) Valid() bool {
+	switch e {
+	case Approved:
+		return true
+	case Delivered:
+		return true
+	case Placed:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for PetStatus.
 const (
 	PetStatusAvailable PetStatus = "available"
@@ -36,6 +50,20 @@ const (
 	PetStatusSold      PetStatus = "sold"
 )
 
+// Valid indicates whether the value is a known member of the PetStatus enum.
+func (e PetStatus) Valid() bool {
+	switch e {
+	case PetStatusAvailable:
+		return true
+	case PetStatusPending:
+		return true
+	case PetStatusSold:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for FindPetsByStatusParamsStatus.
 const (
 	FindPetsByStatusParamsStatusAvailable FindPetsByStatusParamsStatus = "available"
@@ -43,6 +71,20 @@ const (
 	FindPetsByStatusParamsStatusSold      FindPetsByStatusParamsStatus = "sold"
 )
 
+// Valid indicates whether the value is a known member of the FindPetsByStatusParamsStatus enum.
+func (e FindPetsByStatusParamsStatus) Valid() bool {
+	switch e {
+	case FindPetsByStatusParamsStatusAvailable:
+		return true
+	case FindPetsByStatusParamsStatusPending:
+		return true
+	case FindPetsByStatusParamsStatusSold:
+		return true
+	default:
+		return false
+	}
+}
+
 // Address defines model for Address.
 type Address struct {
 	City   *string `json:"city,omitempty"`
diff --git a/internal/test/issues/issue-1189/issue1189.gen.go b/internal/test/issues/issue-1189/issue1189.gen.go
index c1a869ad98..c6e0579fd5 100644
--- a/internal/test/issues/issue-1189/issue1189.gen.go
+++ b/internal/test/issues/issue-1189/issue1189.gen.go
@@ -27,18 +27,54 @@ const (
 	TestFieldA1Foo TestFieldA1 = "foo"
 )
 
+// Valid indicates whether the value is a known member of the TestFieldA1 enum.
+func (e TestFieldA1) Valid() bool {
+	switch e {
+	case TestFieldA1Bar:
+		return true
+	case TestFieldA1Foo:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for TestFieldB.
 const (
 	TestFieldBBar TestFieldB = "bar"
 	TestFieldBFoo TestFieldB = "foo"
 )
 
+// Valid indicates whether the value is a known member of the TestFieldB enum.
+func (e TestFieldB) Valid() bool {
+	switch e {
+	case TestFieldBBar:
+		return true
+	case TestFieldBFoo:
+		return true
+	default:
+		return false
+	}
+}
+
 // Defines values for TestFieldC1.
 const (
 	Bar TestFieldC1 = "bar"
 	Foo TestFieldC1 = "foo"
 )
 
+// Valid indicates whether the value is a known member of the TestFieldC1 enum.
+func (e TestFieldC1) Valid() bool {
+	switch e {
+	case Bar:
+		return true
+	case Foo:
+		return true
+	default:
+		return false
+	}
+}
+
 // Test defines model for test.
 type Test struct {
 	FieldA *Test_FieldA `json:"fieldA,omitempty"`
diff --git a/internal/test/issues/issue-1397/issue1397.gen.go b/internal/test/issues/issue-1397/issue1397.gen.go
index 2463641eb1..11bc883db2 100644
--- a/internal/test/issues/issue-1397/issue1397.gen.go
+++ b/internal/test/issues/issue-1397/issue1397.gen.go
@@ -26,6 +26,18 @@ const (
 	Option2 TestField1 = "option2"
 )
 
+// Valid indicates whether the value is a known member of the TestField1 enum.
+func (e TestField1) Valid() bool {
+	switch e {
+	case Option1:
+		return true
+	case Option2:
+		return true
+	default:
+		return false
+	}
+}
+
 // Test defines model for Test.
 type Test = MyTestRequest
 
diff --git a/internal/test/issues/issue-832/issue.gen.go b/internal/test/issues/issue-832/issue.gen.go
index 0aa74f232e..4a5aa56a3d 100644
--- a/internal/test/issues/issue-832/issue.gen.go
+++ b/internal/test/issues/issue-832/issue.gen.go
@@ -23,6 +23,22 @@ const (
 	Two   Document_Status = "two"
 )
 
+// Valid indicates whether the value is a known member of the Document_Status enum.
+func (e Document_Status) Valid() bool {
+	switch e {
+	case Four:
+		return true
+	case One:
+		return true
+	case Three:
+		return true
+	case Two:
+		return true
+	default:
+		return false
+	}
+}
+
 // Document defines model for Document.
 type Document struct {
 	Name   *string          `json:"name,omitempty"`
diff --git a/internal/test/issues/issue-illegal_enum_names/issue.gen.go b/internal/test/issues/issue-illegal_enum_names/issue.gen.go
index 8f907486cf..0c29ab71eb 100644
--- a/internal/test/issues/issue-illegal_enum_names/issue.gen.go
+++ b/internal/test/issues/issue-illegal_enum_names/issue.gen.go
@@ -34,6 +34,34 @@ const (
 	BarUnderscoreFoo Bar = "_Foo_"
 )
 
+// Valid indicates whether the value is a known member of the Bar enum.
+func (e Bar) Valid() bool {
+	switch e {
+	case BarBar:
+		return true
+	case BarEmpty:
+		return true
+	case BarFoo:
+		return true
+	case BarFoo1:
+		return true
+	case BarFoo2:
+		return true
+	case BarFooBar:
+		return true
+	case BarFooBar1:
+		return true
+	case BarN1:
+		return true
+	case BarN1Foo:
+		return true
+	case BarUnderscoreFoo:
+		return true
+	default:
+		return false
+	}
+}
+
 // Bar defines model for Bar.
 type Bar string
 
diff --git a/internal/test/parameters/parameters.gen.go b/internal/test/parameters/parameters.gen.go
index 630770731a..47c98a774e 100644
--- a/internal/test/parameters/parameters.gen.go
+++ b/internal/test/parameters/parameters.gen.go
@@ -27,6 +27,18 @@ const (
 	N200 EnumParamsParamsEnumPathParam = 200
 )
 
+// Valid indicates whether the value is a known member of the EnumParamsParamsEnumPathParam enum.
+func (e EnumParamsParamsEnumPathParam) Valid() bool {
+	switch e {
+	case N100:
+		return true
+	case N200:
+		return true
+	default:
+		return false
+	}
+}
+
 // ComplexObject defines model for ComplexObject.
 type ComplexObject struct {
 	Id      int    `json:"Id"`
diff --git a/internal/test/schemas/schemas.gen.go b/internal/test/schemas/schemas.gen.go
index 1a7f9e61b7..c46358f7f6 100644
--- a/internal/test/schemas/schemas.gen.go
+++ b/internal/test/schemas/schemas.gen.go
@@ -34,6 +34,18 @@ const (
 	Second EnumInObjInArrayVal = "second"
 )
 
+// Valid indicates whether the value is a known member of the EnumInObjInArrayVal enum.
+func (e EnumInObjInArrayVal) Valid() bool {
+	switch e {
+	case First:
+		return true
+	case Second:
+		return true
+	default:
+		return false
+	}
+}
+
 // N5StartsWithNumber This schema name starts with a number
 type N5StartsWithNumber = map[string]interface{}
 
diff --git a/internal/test/server/server.gen.go b/internal/test/server/server.gen.go
index e360916b3a..b2468c75b4 100644
--- a/internal/test/server/server.gen.go
+++ b/internal/test/server/server.gen.go
@@ -19,6 +19,18 @@ const (
 	Text GetWithContentTypeParamsContentType = "text"
 )
 
+// Valid indicates whether the value is a known member of the GetWithContentTypeParamsContentType enum.
+func (e GetWithContentTypeParamsContentType) Valid() bool {
+	switch e {
+	case Json:
+		return true
+	case Text:
+		return true
+	default:
+		return false
+	}
+}
+
 // EveryTypeOptional defines model for EveryTypeOptional.
 type EveryTypeOptional struct {
 	ArrayInlineField     *[]int              `json:"array_inline_field,omitempty"`
diff --git a/pkg/codegen/templates/constants.tmpl b/pkg/codegen/templates/constants.tmpl
index 8fad8764c4..1c8cbd4922 100644
--- a/pkg/codegen/templates/constants.tmpl
+++ b/pkg/codegen/templates/constants.tmpl
@@ -12,4 +12,14 @@ const (
   {{$name}} {{$Enum.TypeName}} = {{$Enum.ValueWrapper}}{{$value}}{{$Enum.ValueWrapper -}}
 {{end}}
 )
+
+// Valid indicates whether the value is a known member of the {{$Enum.TypeName}} enum.
+func (e {{$Enum.TypeName}}) Valid() bool {
+    switch e {
+    {{range $name, $value := $Enum.GetValues}}case {{$name}}:
+        return true
+    {{end}}default:
+        return false
+    }
+}
 {{end}}