diff --git a/templates/cc/register.go b/templates/cc/register.go
index e92798577..050efda90 100644
--- a/templates/cc/register.go
+++ b/templates/cc/register.go
@@ -315,7 +315,7 @@ func (fns CCFuncs) inType(f pgs.Field, x interface{}) string {
 			return fns.cTypeOfString(fns.Type(f).Value().String())
 		}
 
-		return fns.PackageName(fldEn).String() + "::" + fns.Type(f).Value().String()
+		return fns.packageName(fldEn) + "::" + fns.Type(f).Value().String()
 	default:
 		return fns.cType(f.Type())
 	}
diff --git a/templates/cc/repeated.go b/templates/cc/repeated.go
index 53b2a35f1..e7124f6f7 100644
--- a/templates/cc/repeated.go
+++ b/templates/cc/repeated.go
@@ -26,6 +26,9 @@ const repTpl = `
 	{{ end }}
 
 	{{ if $r.GetUnique }}
+	{{ if isRepeatedEnum $f }}
+	std::unordered_set<int> {{ lookup $f "Unique" }};
+	{{ else }}
 	// Implement comparison for wrapped reference types
 	struct cmp {
 		bool operator() (const std::reference_wrapper<{{ $typ }}> lhs, const std::reference_wrapper<{{ $typ }}> rhs) const {
@@ -44,6 +47,7 @@ const repTpl = `
 	// Save a set of references to avoid copying overhead
 	std::unordered_set<std::reference_wrapper<{{ $typ }}>, hash, cmp> {{ lookup $f "Unique" }};
 	{{ end }}
+	{{ end }}
 
 	{{ if or $r.GetUnique (ne (.Elem "" "").Typ "none") }}
 		for (int i = 0; i < {{ accessor . }}.size(); i++) {
@@ -51,7 +55,11 @@ const repTpl = `
 			(void)item;
 
 			{{ if $r.GetUnique }}
+				{{ if isRepeatedEnum $f }}
+				auto p = {{ lookup $f "Unique" }}.emplace(item);
+				{{ else }}
 				auto p = {{ lookup $f "Unique" }}.emplace(const_cast<{{ $typ }}&>(item));
+				{{ end }}
 				if (p.second == false) {
 					{{ errIdx . "i" "repeated value must contain unique items" }}
 				}
diff --git a/templates/goshared/register.go b/templates/goshared/register.go
index 19a2a00ae..6a8fac73d 100644
--- a/templates/goshared/register.go
+++ b/templates/goshared/register.go
@@ -415,3 +415,29 @@ func (fns goSharedFuncs) enumPackages(enums []pgs.Enum) map[pgs.Name]NormalizedE
 func (fns goSharedFuncs) snakeCase(name string) string {
 	return strcase.ToSnake(name)
 }
+
+func (fns goSharedFuncs) Type(f pgs.Field) pgsgo.TypeName {
+	if f.Type().ProtoType() == pgs.EnumT {
+		ens := fns.enumPackages(fns.externalEnums(f.File()))
+		// Check if the imported name of the enum has collided and been renamed
+		if len(ens) != 0 {
+			enType := f.Type().Enum()
+			if f.Type().IsRepeated() {
+				enType = f.Type().Element().Enum()
+			}
+
+			enImportPath := fns.ImportPath(enType)
+			for pkg, en := range ens {
+				if en.FilePath == enImportPath {
+					name := fns.enumName(enType)
+					if f.Type().IsRepeated() {
+						return pgsgo.TypeName("[]" + pkg.String() + "." + name)
+					}
+					return pgsgo.TypeName(pkg.String() + "." + name)
+				}
+			}
+		}
+	}
+
+	return fns.Context.Type(f)
+}
diff --git a/templates/shared/enums.go b/templates/shared/enums.go
index bb5f053e7..79fcf39f4 100644
--- a/templates/shared/enums.go
+++ b/templates/shared/enums.go
@@ -11,6 +11,10 @@ func isEnum(f pgs.Field) bool {
 	return f.Type().IsEnum()
 }
 
+func isRepeatedEnum(f pgs.Field) bool {
+	return f.Type().IsRepeated() && f.Type().Element().IsEnum()
+}
+
 func enumNamesMap(values []pgs.EnumValue) (m map[int32]string) {
 	m = make(map[int32]string)
 	for _, v := range values {
diff --git a/templates/shared/functions.go b/templates/shared/functions.go
index eb10045d8..8ed5cd68b 100644
--- a/templates/shared/functions.go
+++ b/templates/shared/functions.go
@@ -8,16 +8,17 @@ import (
 
 func RegisterFunctions(tpl *template.Template, params pgs.Parameters) {
 	tpl.Funcs(map[string]interface{}{
-		"disabled":  Disabled,
-		"ignored":   Ignored,
-		"required":  RequiredOneOf,
-		"context":   rulesContext,
-		"render":    Render(tpl),
-		"has":       Has,
-		"needs":     Needs,
-		"fileneeds": FileNeeds,
-		"isEnum":    isEnum,
-		"enumList":  enumList,
-		"enumVal":   enumVal,
+		"disabled":       Disabled,
+		"ignored":        Ignored,
+		"required":       RequiredOneOf,
+		"context":        rulesContext,
+		"render":         Render(tpl),
+		"has":            Has,
+		"needs":          Needs,
+		"fileneeds":      FileNeeds,
+		"isEnum":         isEnum,
+		"isRepeatedEnum": isRepeatedEnum,
+		"enumList":       enumList,
+		"enumVal":        enumVal,
 	})
 }
diff --git a/tests/harness/cases/BUILD b/tests/harness/cases/BUILD
index 514d293c0..d557a5e03 100644
--- a/tests/harness/cases/BUILD
+++ b/tests/harness/cases/BUILD
@@ -34,6 +34,7 @@ proto_library(
     visibility = ["//visibility:public"],
     deps = [
         "//tests/harness/cases/other_package:embed_proto",
+        "//tests/harness/cases/other_package/nested:enum_proto",
         "//tests/harness/cases/sort:sort_proto",
         "//tests/harness/cases/yet_another_package:embed_proto",
         "//validate:validate_proto",
@@ -50,6 +51,7 @@ pgv_go_proto_library(
     proto = ":cases_proto",
     deps = [
         "//tests/harness/cases/other_package:go",
+        "//tests/harness/cases/other_package/nested:go",
         "//tests/harness/cases/sort:go",
         "//tests/harness/cases/yet_another_package:go",
         "@org_golang_google_protobuf//types/known/anypb:go_default_library",
@@ -63,6 +65,7 @@ pgv_cc_proto_library(
     name = "cc",
     cc_deps = [
         "//tests/harness/cases/other_package:cc",
+        "//tests/harness/cases/other_package/nested:cc",
         "//tests/harness/cases/sort:cc",
         "//tests/harness/cases/yet_another_package:cc",
     ],
@@ -81,6 +84,7 @@ pgv_java_proto_library(
     java_deps = [
         ":cases_java_proto",
         "//tests/harness/cases/other_package:java",
+        "//tests/harness/cases/other_package/nested:java",
         "//tests/harness/cases/yet_another_package:java",
         "//tests/harness/cases/sort:java",
     ],
diff --git a/tests/harness/cases/enums.proto b/tests/harness/cases/enums.proto
index 97c1ed0fd..14f404365 100644
--- a/tests/harness/cases/enums.proto
+++ b/tests/harness/cases/enums.proto
@@ -4,6 +4,7 @@ package tests.harness.cases;
 option go_package = "github.com/envoyproxy/protoc-gen-validate/tests/harness/cases/go;cases";
 import "validate/validate.proto";
 import "tests/harness/cases/other_package/embed.proto";
+import "tests/harness/cases/other_package/nested/enum.proto";
 import "tests/harness/cases/yet_another_package/embed.proto";
 import "tests/harness/cases/sort/sort.proto";
 
@@ -51,11 +52,16 @@ message EnumExternal4 {
 
 message RepeatedEnumDefined { repeated TestEnum val = 1 [(validate.rules).repeated.items.enum.defined_only = true]; }
 message RepeatedExternalEnumDefined { repeated other_package.Embed.Enumerated val = 1 [(validate.rules).repeated.items.enum.defined_only = true]; }
+message RepeatedExternalEnumMultiLevelDefined { repeated other_package.nested.DeepEnum val = 1 [(validate.rules).repeated.items.enum.defined_only = true]; }
 message RepeatedYetAnotherExternalEnumDefined { repeated yet_another_package.Embed.Enumerated val = 1 [(validate.rules).repeated.items.enum.defined_only = true]; }
 message RepeatedEnumExternal {
     repeated other_package.Embed.FooNumber foo = 1 [(validate.rules).repeated.items.enum = { in: [0, 2] }];
     repeated yet_another_package.Embed.BarNumber bar = 2 [(validate.rules).repeated.items.enum = { not_in: [1] }];
 }
+message RepeatedExternalEnumMultiLevel {
+    repeated other_package.nested.DeepEnum foo = 1 [(validate.rules).repeated.items.enum = { in: [1] }];
+    repeated other_package.nested.DeepEnum bar = 2 [(validate.rules).repeated.items.enum = { not_in: [1] }];
+}
 
 message MapEnumDefined { map<string, TestEnum> val = 1 [(validate.rules).map.values.enum.defined_only = true]; }
 message MapExternalEnumDefined { map<string, other_package.Embed.Enumerated> val = 1 [(validate.rules).map.values.enum.defined_only = true]; }
diff --git a/tests/harness/cases/other_package/nested/BUILD b/tests/harness/cases/other_package/nested/BUILD
new file mode 100644
index 000000000..de40dd2d5
--- /dev/null
+++ b/tests/harness/cases/other_package/nested/BUILD
@@ -0,0 +1,48 @@
+load("@com_google_protobuf//bazel:proto_library.bzl", "proto_library")
+load("@com_google_protobuf//bazel:py_proto_library.bzl", "py_proto_library")
+load("@rules_java//java:defs.bzl", "java_proto_library")
+load(
+    "//bazel:pgv_proto_library.bzl",
+    "pgv_cc_proto_library",
+    "pgv_go_proto_library",
+    "pgv_java_proto_library",
+)
+
+proto_library(
+    name = "enum_proto",
+    srcs = [
+        "enum.proto",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+pgv_go_proto_library(
+    name = "go",
+    importpath = "github.com/envoyproxy/protoc-gen-validate/tests/harness/cases/other_package/nested/go",
+    proto = ":enum_proto",
+)
+
+pgv_cc_proto_library(
+    name = "cc",
+    visibility = ["//tests:__subpackages__"],
+    deps = [":enum_proto"],
+)
+
+java_proto_library(
+    name = "enum_java_proto",
+    visibility = ["//visibility:public"],
+    deps = [":enum_proto"],
+)
+
+pgv_java_proto_library(
+    name = "java",
+    java_deps = [":enum_java_proto"],
+    visibility = ["//visibility:public"],
+    deps = [":enum_proto"],
+)
+
+py_proto_library(
+    name = "enum_python_proto",
+    visibility = ["//visibility:public"],
+    deps = [":enum_proto"],
+)
diff --git a/tests/harness/cases/other_package/nested/enum.proto b/tests/harness/cases/other_package/nested/enum.proto
new file mode 100644
index 000000000..6a5fc1bdd
--- /dev/null
+++ b/tests/harness/cases/other_package/nested/enum.proto
@@ -0,0 +1,9 @@
+syntax = "proto3";
+
+package tests.harness.cases.other_package.nested;
+option go_package = "github.com/envoyproxy/protoc-gen-validate/tests/harness/cases/other_package/nested/go;nested";
+
+enum DeepEnum {
+    DEEP_UNSPECIFIED = 0;
+    DEEP_ONE = 1;
+}
diff --git a/tests/harness/cases/repeated.proto b/tests/harness/cases/repeated.proto
index c3ac792f9..7c6e6a0a7 100644
--- a/tests/harness/cases/repeated.proto
+++ b/tests/harness/cases/repeated.proto
@@ -22,6 +22,7 @@ message RepeatedMax       { repeated double val = 1 [(validate.rules).repeated.m
 message RepeatedMinMax    { repeated sfixed32 val = 1 [(validate.rules).repeated = {min_items: 2, max_items: 4}]; }
 message RepeatedExact     { repeated uint32 val = 1 [(validate.rules).repeated = {min_items: 3, max_items: 3}]; }
 message RepeatedUnique    { repeated string val = 1 [(validate.rules).repeated.unique = true]; }
+message RepeatedUniqueEnum { repeated AnEnum val = 1 [(validate.rules).repeated.unique = true]; }
 message RepeatedItemRule  { repeated float val = 1 [(validate.rules).repeated.items.float.gt = 0]; }
 message RepeatedItemPattern  { repeated string val = 1 [(validate.rules).repeated.items.string.pattern = "(?i)^[a-z0-9]+$"]; }
 message RepeatedEmbedSkip { repeated Embed val = 1 [(validate.rules).repeated.items.message.skip = true]; }
diff --git a/tests/harness/executor/BUILD b/tests/harness/executor/BUILD
index 9922814c4..a10709a72 100644
--- a/tests/harness/executor/BUILD
+++ b/tests/harness/executor/BUILD
@@ -19,6 +19,7 @@ go_library(
         "//tests/harness:harness_go_proto",
         "//tests/harness/cases:go",
         "//tests/harness/cases/other_package:go",
+        "//tests/harness/cases/other_package/nested:go",
         "//tests/harness/cases/sort:go",
         "//tests/harness/cases/yet_another_package:go",
         "@org_golang_google_protobuf//proto:go_default_library",
diff --git a/tests/harness/executor/cases.go b/tests/harness/executor/cases.go
index c8eb26583..f22c65dcc 100644
--- a/tests/harness/executor/cases.go
+++ b/tests/harness/executor/cases.go
@@ -6,6 +6,7 @@ import (
 
 	cases "github.com/envoyproxy/protoc-gen-validate/tests/harness/cases/go"
 	other_package "github.com/envoyproxy/protoc-gen-validate/tests/harness/cases/other_package/go"
+	nested "github.com/envoyproxy/protoc-gen-validate/tests/harness/cases/other_package/nested/go"
 	sort "github.com/envoyproxy/protoc-gen-validate/tests/harness/cases/sort/go"
 	yet_another_package "github.com/envoyproxy/protoc-gen-validate/tests/harness/cases/yet_another_package/go"
 	"google.golang.org/protobuf/proto"
@@ -1035,12 +1036,19 @@ var enumCases = []TestCase{
 	{"enum repeated (external) - defined_only - valid", &cases.RepeatedExternalEnumDefined{Val: []other_package.Embed_Enumerated{other_package.Embed_VALUE}}, 0},
 	{"enum repeated (external) - defined_only - invalid", &cases.RepeatedExternalEnumDefined{Val: []other_package.Embed_Enumerated{math.MaxInt32}}, 1},
 
+	{"enum repeated (external multilevel) - defined_only - valid", &cases.RepeatedExternalEnumMultiLevelDefined{Val: []nested.DeepEnum{nested.DeepEnum_DEEP_ONE}}, 0},
+	{"enum repeated (external multilevel) - defined_only - invalid", &cases.RepeatedExternalEnumMultiLevelDefined{Val: []nested.DeepEnum{math.MaxInt32}}, 1},
+
 	{"enum repeated (another external) - defined_only - valid", &cases.RepeatedYetAnotherExternalEnumDefined{Val: []yet_another_package.Embed_Enumerated{yet_another_package.Embed_VALUE}}, 0},
 
 	{"enum repeated (external) - in - valid", &cases.RepeatedEnumExternal{Foo: []other_package.Embed_FooNumber{other_package.Embed_ZERO, other_package.Embed_TWO}}, 0},
 	{"enum repeated (external) - in - invalid", &cases.RepeatedEnumExternal{Foo: []other_package.Embed_FooNumber{other_package.Embed_ONE}}, 1},
 	{"enum repeated (external) - not in - valid", &cases.RepeatedEnumExternal{Bar: []yet_another_package.Embed_BarNumber{yet_another_package.Embed_ZERO, yet_another_package.Embed_TWO}}, 0},
 	{"enum repeated (external) - not in - invalid", &cases.RepeatedEnumExternal{Bar: []yet_another_package.Embed_BarNumber{yet_another_package.Embed_ONE}}, 1},
+	{"enum repeated (external multilevel) - in - valid", &cases.RepeatedExternalEnumMultiLevel{Foo: []nested.DeepEnum{nested.DeepEnum_DEEP_ONE}}, 0},
+	{"enum repeated (external multilevel) - in - invalid", &cases.RepeatedExternalEnumMultiLevel{Foo: []nested.DeepEnum{nested.DeepEnum_DEEP_UNSPECIFIED}}, 1},
+	{"enum repeated (external multilevel) - not in - valid", &cases.RepeatedExternalEnumMultiLevel{Bar: []nested.DeepEnum{nested.DeepEnum_DEEP_UNSPECIFIED}}, 0},
+	{"enum repeated (external multilevel) - not in - invalid", &cases.RepeatedExternalEnumMultiLevel{Bar: []nested.DeepEnum{nested.DeepEnum_DEEP_ONE}}, 1},
 
 	{"enum map - defined_only - valid", &cases.MapEnumDefined{Val: map[string]cases.TestEnum{"foo": cases.TestEnum_TWO}}, 0},
 	{"enum map - defined_only - invalid", &cases.MapEnumDefined{Val: map[string]cases.TestEnum{"foo": math.MaxInt32}}, 1},
@@ -1116,6 +1124,9 @@ var repeatedCases = []TestCase{
 	{"repeated - unique - valid (empty)", &cases.RepeatedUnique{}, 0},
 	{"repeated - unique - valid (case sensitivity)", &cases.RepeatedUnique{Val: []string{"foo", "Foo"}}, 0},
 	{"repeated - unique - invalid", &cases.RepeatedUnique{Val: []string{"foo", "bar", "foo", "baz"}}, 1},
+	{"repeated - unique enum - valid", &cases.RepeatedUniqueEnum{Val: []cases.AnEnum{cases.AnEnum_X, cases.AnEnum_Y}}, 0},
+	{"repeated - unique enum - valid (empty)", &cases.RepeatedUniqueEnum{}, 0},
+	{"repeated - unique enum - invalid", &cases.RepeatedUniqueEnum{Val: []cases.AnEnum{cases.AnEnum_X, cases.AnEnum_X}}, 1},
 
 	{"repeated - items - valid", &cases.RepeatedItemRule{Val: []float32{1, 2, 3}}, 0},
 	{"repeated - items - valid (empty)", &cases.RepeatedItemRule{Val: []float32{}}, 0},