diff --git a/mediapipe/tasks/ios/test/text/language_detector/BUILD b/mediapipe/tasks/ios/test/text/language_detector/BUILD
new file mode 100644
index 000000000..9f5c70bfd
--- /dev/null
+++ b/mediapipe/tasks/ios/test/text/language_detector/BUILD
@@ -0,0 +1,61 @@
+load(
+    "@build_bazel_rules_apple//apple:ios.bzl",
+    "ios_unit_test",
+)
+load(
+    "@build_bazel_rules_swift//swift:swift.bzl",
+    "swift_library",
+)
+load(
+    "//mediapipe/framework/tool:ios.bzl",
+    "MPP_TASK_MINIMUM_OS_VERSION",
+)
+load(
+    "@org_tensorflow//tensorflow/lite:special_rules.bzl",
+    "tflite_ios_lab_runner",
+)
+
+package(default_visibility = ["//mediapipe/tasks:internal"])
+
+licenses(["notice"])
+
+# Default tags for filtering iOS targets. Targets are restricted to Apple platforms.
+TFL_DEFAULT_TAGS = [
+    "apple",
+]
+
+# Following sanitizer tests are not supported by iOS test targets.
+TFL_DISABLED_SANITIZER_TAGS = [
+    "noasan",
+    "nomsan",
+    "notsan",
+]
+
+objc_library(
+    name = "MPPLanguageDetectorObjcTestLibrary",
+    testonly = 1,
+    srcs = ["MPPLanguageDetectorTests.mm"],
+    copts = [
+        "-ObjC++",
+        "-std=c++17",
+        "-x objective-c++",
+    ],
+    data = [
+        "//mediapipe/tasks/testdata/text:language_detector",
+    ],
+    deps = [
+        "//mediapipe/tasks/ios/common:MPPCommon",
+        "//mediapipe/tasks/ios/text/language_detector:MPPLanguageDetector",
+        "//mediapipe/tasks/ios/test/utils:MPPFileInfo",
+    ],
+)
+
+ios_unit_test(
+    name = "MPPLanguageDetectorObjcTest",
+    minimum_os_version = MPP_TASK_MINIMUM_OS_VERSION,
+    runner = tflite_ios_lab_runner("IOS_LATEST"),
+    tags = TFL_DEFAULT_TAGS + TFL_DISABLED_SANITIZER_TAGS,
+    deps = [
+        ":MPPLanguageDetectorObjcTestLibrary",
+    ],
+)
diff --git a/mediapipe/tasks/ios/test/text/language_detector/MPPLanguageDetectorTests.mm b/mediapipe/tasks/ios/test/text/language_detector/MPPLanguageDetectorTests.mm
new file mode 100644
index 000000000..51009fb75
--- /dev/null
+++ b/mediapipe/tasks/ios/test/text/language_detector/MPPLanguageDetectorTests.mm
@@ -0,0 +1,162 @@
+// Copyright 2023 The MediaPipe 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.
+
+#import <XCTest/XCTest.h>
+
+#import "mediapipe/tasks/ios/common/sources/MPPCommon.h"
+#import "mediapipe/tasks/ios/test/utils/sources/MPPFileInfo.h"
+#import "mediapipe/tasks/ios/text/language_detector/sources/MPPLanguageDetector.h"
+
+static MPPFileInfo *const kLanguageDetectorModelFileInfo =
+    [[MPPFileInfo alloc] initWithName:@"language_detector" type:@"tflite"];
+
+static NSString *const kExpectedErrorDomain = @"com.google.mediapipe.tasks";
+
+#define AssertEqualErrors(error, expectedError)              \
+  XCTAssertNotNil(error);                                    \
+  XCTAssertEqualObjects(error.domain, expectedError.domain); \
+  XCTAssertEqual(error.code, expectedError.code);            \
+  XCTAssertEqualObjects(error.localizedDescription, expectedError.localizedDescription)
+
+@interface MPPLanguageDetectorTests : XCTestCase
+@end
+
+@implementation MPPLanguageDetectorTests
+
+- (void)testCreateLanguageDetectorFailsWithMissingModelPath {
+  MPPFileInfo *fileInfo = [[MPPFileInfo alloc] initWithName:@"" type:@""];
+
+  NSError *error = nil;
+  MPPLanguageDetector *languageDetector =
+      [[MPPLanguageDetector alloc] initWithModelPath:fileInfo.path error:&error];
+  XCTAssertNil(languageDetector);
+
+  NSError *expectedError = [NSError
+      errorWithDomain:kExpectedErrorDomain
+                 code:MPPTasksErrorCodeInvalidArgumentError
+             userInfo:@{
+               NSLocalizedDescriptionKey :
+                   @"INVALID_ARGUMENT: ExternalFile must specify at least one of 'file_content', "
+                   @"'file_name', 'file_pointer_meta' or 'file_descriptor_meta'."
+             }];
+  AssertEqualErrors(error, expectedError);
+}
+
+- (void)testCreateLanguageDetectorFailsWithBothAllowlistAndDenylist {
+  MPPLanguageDetectorOptions *options =
+      [self languageDetectorOptionsWithModelFileInfo:kLanguageDetectorModelFileInfo];
+  options.categoryAllowlist = @[ @"en" ];
+  options.categoryDenylist = @[ @"en" ];
+
+  [self assertCreateLanguageDetectorWithOptions:options
+                         failsWithExpectedError:
+                             [NSError
+                                 errorWithDomain:kExpectedErrorDomain
+                                            code:MPPTasksErrorCodeInvalidArgumentError
+                                        userInfo:@{
+                                          NSLocalizedDescriptionKey :
+                                              @"INVALID_ARGUMENT: `category_allowlist` and "
+                                              @"`category_denylist` are mutually exclusive options."
+                                        }]];
+}
+
+- (void)testCreateLanguageDetectorFailsWithInvalidMaxResults {
+  MPPLanguageDetectorOptions *options =
+      [self languageDetectorOptionsWithModelFileInfo:kLanguageDetectorModelFileInfo];
+  options.maxResults = 0;
+
+  [self
+      assertCreateLanguageDetectorWithOptions:options
+                       failsWithExpectedError:
+                           [NSError errorWithDomain:kExpectedErrorDomain
+                                               code:MPPTasksErrorCodeInvalidArgumentError
+                                           userInfo:@{
+                                             NSLocalizedDescriptionKey :
+                                                 @"INVALID_ARGUMENT: Invalid `max_results` option: "
+                                                 @"value must be != 0."
+                                           }]];
+}
+
+- (void)testClassifyWithL2CModelSucceeds {
+  MPPLanguageDetectorOptions *options =
+      [self languageDetectorOptionsWithModelFileInfo:kLanguageDetectorModelFileInfo];
+
+  MPPLanguageDetector *languageDetector = [self createLanguageDetectorWithOptionsSucceeds:options];
+  NSString *enText = @"To be, or not to be, that is the question";
+  NSArray<MPPLanguagePrediction *> *expectedEnLanguagePredictions =
+      @[ [[MPPLanguagePrediction alloc] initWithLanguageCode:@"en" probability:0.9998559f] ];
+
+  [self assertResultsOfDetectLanguageOfText:enText
+                               usingLanguageDetector:languageDetector
+      approximatelyEqualsExpectedLanguagePredictions:expectedEnLanguagePredictions];
+
+  NSString *frText = @"Il y a beaucoup de bouches qui parlent et fort peu de têtes qui pensent.";
+  NSArray<MPPLanguagePrediction *> *expectedFrLanguagePredictions =
+      @[ [[MPPLanguagePrediction alloc] initWithLanguageCode:@"fr" probability:0.9997813f] ];
+
+  [self assertResultsOfDetectLanguageOfText:frText
+                               usingLanguageDetector:languageDetector
+      approximatelyEqualsExpectedLanguagePredictions:expectedFrLanguagePredictions];
+
+  NSString *ruText = @"это какой-то английский язык";
+  NSArray<MPPLanguagePrediction *> *expectedRuLanguagePredictions =
+      @[ [[MPPLanguagePrediction alloc] initWithLanguageCode:@"ru" probability:0.9933616f] ];
+
+  [self assertResultsOfDetectLanguageOfText:ruText
+                               usingLanguageDetector:languageDetector
+      approximatelyEqualsExpectedLanguagePredictions:expectedRuLanguagePredictions];
+}
+
+#pragma mark Assert Segmenter Results
+- (void)assertResultsOfDetectLanguageOfText:(NSString *)text
+                             usingLanguageDetector:(MPPLanguageDetector *)languageDetector
+    approximatelyEqualsExpectedLanguagePredictions:
+        (NSArray<MPPLanguagePrediction *> *)expectedLanguagePredictions {
+  MPPLanguageDetectorResult *result = [languageDetector detectText:text error:nil];
+  XCTAssertNotNil(result);
+  XCTAssertEqualWithAccuracy(result.languagePredictions[0].probability,
+                             expectedLanguagePredictions[0].probability, 1e-3);
+  XCTAssertEqualObjects(result.languagePredictions[0].languageCode,
+                        expectedLanguagePredictions[0].languageCode);
+}
+
+#pragma mark Language Detector Initializers
+
+- (MPPLanguageDetectorOptions *)languageDetectorOptionsWithModelFileInfo:(MPPFileInfo *)fileInfo {
+  MPPLanguageDetectorOptions *options = [[MPPLanguageDetectorOptions alloc] init];
+  options.baseOptions.modelAssetPath = fileInfo.path;
+  return options;
+}
+
+- (MPPLanguageDetector *)createLanguageDetectorWithOptionsSucceeds:
+    (MPPLanguageDetectorOptions *)options {
+  NSError *error;
+  MPPLanguageDetector *languageDetector = [[MPPLanguageDetector alloc] initWithOptions:options
+                                                                                 error:&error];
+  XCTAssertNotNil(languageDetector);
+  XCTAssertNil(error);
+
+  return languageDetector;
+}
+
+- (void)assertCreateLanguageDetectorWithOptions:(MPPLanguageDetectorOptions *)options
+                         failsWithExpectedError:(NSError *)expectedError {
+  NSError *error = nil;
+  MPPLanguageDetector *languageDetector = [[MPPLanguageDetector alloc] initWithOptions:options
+                                                                                 error:&error];
+  XCTAssertNil(languageDetector);
+  AssertEqualErrors(error, expectedError);
+}
+
+@end
\ No newline at end of file