diff --git a/gcloud-java-translate/src/main/java/com/google/cloud/translate/Translate.java b/gcloud-java-translate/src/main/java/com/google/cloud/translate/Translate.java
index 1d661a978794..5e406a9e2e28 100644
--- a/gcloud-java-translate/src/main/java/com/google/cloud/translate/Translate.java
+++ b/gcloud-java-translate/src/main/java/com/google/cloud/translate/Translate.java
@@ -70,4 +70,46 @@ public static LanguageListOption targetLanguage(String targetLanguage) {
    * }</pre>
    */
   List<Language> listSupportedLanguages(LanguageListOption... options);
+
+  /**
+   * Detects the language of the provided texts.
+   *
+   * <p>Example of detecting the language of some texts:
+   * <pre> {@code
+   * List<String> texts = new LinkedList<>();
+   * texts.add("Hello, World!");
+   * texts.add("¡Hola Mundo!");
+   * List<Detection> detections = translate.detect(texts);
+   * }</pre>
+   *
+   * @param texts the texts for which language should be detected
+   * @return a list of objects containing information on the language detection, one for each
+   *     provided text, in order.
+   */
+  List<Detection> detect(List<String> texts);
+
+  /**
+   * Detects the language of the provided texts.
+   *
+   * <p>Example of detecting the language of some texts:
+   * <pre> {@code
+   * List<Detection> detections = translate.detect("Hello, World!", "¡Hola Mundo!");
+   * }</pre>
+   *
+   * @param texts the texts for which language should be detected
+   * @return a list of objects containing information on the language detection, one for each
+   *     provided text, in order.
+   */
+  List<Detection> detect(String... texts);
+
+  /**
+   * Detects the language of the provided text. Returns an object containing information on the
+   * language detection.
+   *
+   * <p>Example of detecting the language a text:
+   * <pre> {@code
+   * Detection detection = translate.detect("Hello, World!");
+   * }</pre>
+   */
+  Detection detect(String text);
 }
diff --git a/gcloud-java-translate/src/main/java/com/google/cloud/translate/TranslateImpl.java b/gcloud-java-translate/src/main/java/com/google/cloud/translate/TranslateImpl.java
index 36d0b3afc863..e7aa8dfd6200 100644
--- a/gcloud-java-translate/src/main/java/com/google/cloud/translate/TranslateImpl.java
+++ b/gcloud-java-translate/src/main/java/com/google/cloud/translate/TranslateImpl.java
@@ -18,14 +18,20 @@
 
 import static com.google.cloud.RetryHelper.runWithRetries;
 import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkState;
 
+import com.google.api.services.translate.model.DetectionsResourceItems;
 import com.google.api.services.translate.model.LanguagesResource;
 import com.google.cloud.BaseService;
 import com.google.cloud.RetryHelper.RetryHelperException;
 import com.google.cloud.translate.spi.TranslateRpc;
+import com.google.common.base.Function;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Callable;
@@ -34,6 +40,14 @@ final class TranslateImpl extends BaseService<TranslateOptions> implements Trans
 
   private final TranslateRpc translateRpc;
 
+  private static final Function<List<DetectionsResourceItems>, Detection>
+      DETECTION_FROM_PB_FUNCTION = new Function<List<DetectionsResourceItems>, Detection>() {
+        @Override
+        public Detection apply(List<DetectionsResourceItems> detectionPb) {
+          return Detection.fromPb(detectionPb.get(0));
+        }
+      };
+
   TranslateImpl(TranslateOptions options) {
     super(options);
     translateRpc = options.rpc();
@@ -53,6 +67,41 @@ public List<LanguagesResource> call() {
     }
   }
 
+  @Override
+  public List<Detection> detect(final List<String> texts) {
+    try {
+      List<List<DetectionsResourceItems>> detectionsPb =
+          runWithRetries(new Callable<List<List<DetectionsResourceItems>>>() {
+            @Override
+            public List<List<DetectionsResourceItems>> call() {
+              return translateRpc.detect(texts);
+            }
+          }, options().retryParams(), EXCEPTION_HANDLER, options().clock());
+      Iterator<List<DetectionsResourceItems>> detectionIterator = detectionsPb.iterator();
+      Iterator<String> textIterator = texts.iterator();
+      while (detectionIterator.hasNext() && textIterator.hasNext()) {
+        List<DetectionsResourceItems> detectionPb = detectionIterator.next();
+        String text = textIterator.next();
+        checkState(detectionPb != null && !detectionPb.isEmpty(),
+            "No detection found for text: %s", text);
+        checkState(detectionPb.size() == 1, "Multiple detections found for text: %s", text);
+      }
+      return Lists.transform(detectionsPb, DETECTION_FROM_PB_FUNCTION);
+    } catch (RetryHelperException e) {
+      throw TranslateException.translateAndThrow(e);
+    }
+  }
+
+  @Override
+  public List<Detection> detect(String... texts) {
+    return detect(Arrays.asList(texts));
+  }
+
+  @Override
+  public Detection detect(String text) {
+    return detect(Collections.singletonList(text)).get(0);
+  }
+
   private Map<TranslateRpc.Option, ?> optionMap(Option... options) {
     Map<TranslateRpc.Option, Object> optionMap = Maps.newEnumMap(TranslateRpc.Option.class);
     for (Option option : options) {
diff --git a/gcloud-java-translate/src/main/java/com/google/cloud/translate/spi/DefaultTranslateRpc.java b/gcloud-java-translate/src/main/java/com/google/cloud/translate/spi/DefaultTranslateRpc.java
index 14f4a326399d..1af329a0be47 100644
--- a/gcloud-java-translate/src/main/java/com/google/cloud/translate/spi/DefaultTranslateRpc.java
+++ b/gcloud-java-translate/src/main/java/com/google/cloud/translate/spi/DefaultTranslateRpc.java
@@ -57,10 +57,10 @@ private static TranslateException translate(IOException exception) {
   }
 
   @Override
-  public List<List<DetectionsResourceItems>> detect(List<String> text) {
+  public List<List<DetectionsResourceItems>> detect(List<String> texts) {
     try {
       List<List<DetectionsResourceItems>> detections =
-          translate.detections().list(text).setKey(options.apiKey()).execute().getDetections();
+          translate.detections().list(texts).setKey(options.apiKey()).execute().getDetections();
       return detections != null ? detections : ImmutableList.<List<DetectionsResourceItems>>of();
     } catch (IOException ex) {
       throw translate(ex);
@@ -82,14 +82,14 @@ public List<LanguagesResource> listSupportedLanguages(Map<Option, ?> optionMap)
   }
 
   @Override
-  public List<TranslationsResource> translate(List<String> text, Map<Option, ?> optionMap) {
+  public List<TranslationsResource> translate(List<String> texts, Map<Option, ?> optionMap) {
     try {
       String targetLanguage =
           firstNonNull(TARGET_LANGUAGE.getString(optionMap), options.targetLanguage());
       final String sourceLanguage = SOURCE_LANGUAGE.getString(optionMap);
       List<TranslationsResource> translations =
           translate.translations()
-              .list(text, targetLanguage)
+              .list(texts, targetLanguage)
               .setSource(sourceLanguage)
               .setKey(options.apiKey())
               .execute()
diff --git a/gcloud-java-translate/src/test/java/com/google/cloud/translate/TranslateImplTest.java b/gcloud-java-translate/src/test/java/com/google/cloud/translate/TranslateImplTest.java
index 73bca24c118b..24b56a5bb0cb 100644
--- a/gcloud-java-translate/src/test/java/com/google/cloud/translate/TranslateImplTest.java
+++ b/gcloud-java-translate/src/test/java/com/google/cloud/translate/TranslateImplTest.java
@@ -19,6 +19,7 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertSame;
 
+import com.google.api.services.translate.model.DetectionsResourceItems;
 import com.google.api.services.translate.model.LanguagesResource;
 import com.google.cloud.RetryParams;
 import com.google.cloud.translate.Translate.LanguageListOption;
@@ -56,6 +57,12 @@ public class TranslateImplTest {
   private static final Language LANGUAGE4 = Language.fromPb(LANGUAGE4_PB);
   private static final List<Language> LANGUAGES1 = ImmutableList.of(LANGUAGE1, LANGUAGE2);
   private static final List<Language> LANGUAGES2 = ImmutableList.of(LANGUAGE3, LANGUAGE4);
+  private static final DetectionsResourceItems DETECTION1_PB =
+      new DetectionsResourceItems().setLanguage("en").setConfidence(0.9F);
+  private static final DetectionsResourceItems DETECTION2_PB =
+      new DetectionsResourceItems().setLanguage("en").setConfidence(0.8F);
+  private static final Detection DETECTION1 = Detection.fromPb(DETECTION1_PB);
+  private static final Detection DETECTION2 = Detection.fromPb(DETECTION2_PB);
 
   // Empty TranslateRpc options
   private static final Map<TranslateRpc.Option, ?> EMPTY_RPC_OPTIONS = ImmutableMap.of();
@@ -104,7 +111,7 @@ public void testGetOptions() {
   }
 
   @Test
-  public void testListSupporteLanguages() {
+  public void testListSupportedLanguages() {
     EasyMock.expect(translateRpcMock.listSupportedLanguages(EMPTY_RPC_OPTIONS))
         .andReturn(ImmutableList.of(LANGUAGE1_PB, LANGUAGE2_PB));
     EasyMock.replay(translateRpcMock);
@@ -113,7 +120,7 @@ public void testListSupporteLanguages() {
   }
 
   @Test
-  public void testListSupporteLanguagesWithOptions() {
+  public void testListSupportedLanguagesWithOptions() {
     EasyMock.expect(translateRpcMock.listSupportedLanguages(LANGUAGE_LIST_OPTIONS))
         .andReturn(ImmutableList.of(LANGUAGE3_PB, LANGUAGE4_PB));
     EasyMock.replay(translateRpcMock);
@@ -122,6 +129,126 @@ public void testListSupporteLanguagesWithOptions() {
         LanguageListOption.targetLanguage(TARGET_LANGUAGE)));
   }
 
+  @Test
+  public void testDetect() {
+    String text = "text";
+    EasyMock.expect(translateRpcMock.detect(ImmutableList.of(text)))
+        .andReturn(
+            ImmutableList.<List<DetectionsResourceItems>>of(ImmutableList.of(DETECTION1_PB)));
+    EasyMock.replay(translateRpcMock);
+    initializeService();
+    assertEquals(DETECTION1, translate.detect(text));
+  }
+
+  @Test
+  public void testDetectMultipleDetections() {
+    String text = "text";
+    EasyMock.expect(translateRpcMock.detect(ImmutableList.of(text)))
+        .andReturn(ImmutableList.<List<DetectionsResourceItems>>of(
+            ImmutableList.of(DETECTION1_PB, DETECTION2_PB)));
+    EasyMock.replay(translateRpcMock);
+    initializeService();
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage("Multiple detections found for text: text");
+    translate.detect(text);
+  }
+
+  @Test
+  public void testDetectNoDetection() {
+    String text = "text";
+    EasyMock.expect(translateRpcMock.detect(ImmutableList.of(text)))
+        .andReturn(ImmutableList.<List<DetectionsResourceItems>>of(
+            ImmutableList.<DetectionsResourceItems>of()));
+    EasyMock.replay(translateRpcMock);
+    initializeService();
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage("No detection found for text: text");
+    translate.detect(text);
+  }
+
+  @Test
+  public void testDetectList() {
+    String text1 = "text";
+    String text2 = "other text";
+    List<String> texts = ImmutableList.of(text1, text2);
+    EasyMock.expect(translateRpcMock.detect(texts))
+        .andReturn(ImmutableList.<List<DetectionsResourceItems>>of(
+            ImmutableList.of(DETECTION1_PB), ImmutableList.of(DETECTION2_PB)));
+    EasyMock.replay(translateRpcMock);
+    initializeService();
+    assertEquals(ImmutableList.of(DETECTION1, DETECTION2), translate.detect(texts));
+  }
+
+  @Test
+  public void testDetectListMultipleDetections() {
+    String text1 = "text";
+    String text2 = "other text";
+    List<String> texts = ImmutableList.of(text1, text2);
+    EasyMock.expect(translateRpcMock.detect(texts))
+        .andReturn(ImmutableList.<List<DetectionsResourceItems>>of(
+            ImmutableList.of(DETECTION1_PB, DETECTION2_PB), ImmutableList.of(DETECTION1_PB)));
+    EasyMock.replay(translateRpcMock);
+    initializeService();
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage("Multiple detections found for text: text");
+    translate.detect(texts);
+  }
+
+  @Test
+  public void testDetectListNoDetection() {
+    String text1 = "text";
+    String text2 = "other text";
+    List<String> texts = ImmutableList.of(text1, text2);
+    EasyMock.expect(translateRpcMock.detect(texts))
+        .andReturn(ImmutableList.<List<DetectionsResourceItems>>of(
+            ImmutableList.of(DETECTION1_PB), ImmutableList.<DetectionsResourceItems>of()));
+    EasyMock.replay(translateRpcMock);
+    initializeService();
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage("No detection found for text: other text");
+    translate.detect(texts);
+  }
+
+  @Test
+  public void testDetectVararg() {
+    String text1 = "text";
+    String text2 = "other text";
+    EasyMock.expect(translateRpcMock.detect(ImmutableList.of(text1, text2)))
+        .andReturn(ImmutableList.<List<DetectionsResourceItems>>of(
+            ImmutableList.of(DETECTION1_PB), ImmutableList.of(DETECTION2_PB)));
+    EasyMock.replay(translateRpcMock);
+    initializeService();
+    assertEquals(ImmutableList.of(DETECTION1, DETECTION2), translate.detect(text1, text2));
+  }
+
+  @Test
+  public void testDetectVarargMultipleDetections() {
+    String text1 = "text";
+    String text2 = "other text";
+    EasyMock.expect(translateRpcMock.detect(ImmutableList.of(text1, text2)))
+        .andReturn(ImmutableList.<List<DetectionsResourceItems>>of(
+            ImmutableList.of(DETECTION1_PB, DETECTION2_PB), ImmutableList.of(DETECTION1_PB)));
+    EasyMock.replay(translateRpcMock);
+    initializeService();
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage("Multiple detections found for text: text");
+    translate.detect(text1, text2);
+  }
+
+  @Test
+  public void testDetectVarargNoDetection() {
+    String text1 = "text";
+    String text2 = "other text";
+    EasyMock.expect(translateRpcMock.detect(ImmutableList.of(text1, text2)))
+        .andReturn(ImmutableList.<List<DetectionsResourceItems>>of(
+            ImmutableList.of(DETECTION1_PB), ImmutableList.<DetectionsResourceItems>of()));
+    EasyMock.replay(translateRpcMock);
+    initializeService();
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage("No detection found for text: other text");
+    translate.detect(text1, text2);
+  }
+
   @Test
   public void testRetryableException() {
     EasyMock.expect(translateRpcMock.listSupportedLanguages(EMPTY_RPC_OPTIONS))