Index: docs/LibASTMatchersReference.html
===================================================================
--- docs/LibASTMatchersReference.html
+++ docs/LibASTMatchersReference.html
@@ -346,6 +346,15 @@
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>&gt;</td><td class="name" onclick="toggle('objcCategoryImplDecl0')"><a name="objcCategoryImplDecl0Anchor">objcCategoryImplDecl</a></td><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1ObjCCategoryImplDecl.html">ObjCCategoryImplDecl</a>&gt;...</td></tr>
+<tr><td colspan="4" class="doc" id="objcCategoryImplDecl0"><pre>Matches Objective-C category definitions.
+
+Example matches Foo (Additions)
+  @implementation Foo (Additions)
+  @end
+</pre></td></tr>
+
+
 <tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>&gt;</td><td class="name" onclick="toggle('objcImplementationDecl0')"><a name="objcImplementationDecl0Anchor">objcImplementationDecl</a></td><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1ObjCImplementationDecl.html">ObjCImplementationDecl</a>&gt;...</td></tr>
 <tr><td colspan="4" class="doc" id="objcImplementationDecl0"><pre>Matches Objective-C implementation declarations.
 
Index: include/clang/ASTMatchers/ASTMatchers.h
===================================================================
--- include/clang/ASTMatchers/ASTMatchers.h
+++ include/clang/ASTMatchers/ASTMatchers.h
@@ -1178,6 +1178,17 @@
   Decl,
   ObjCCategoryDecl> objcCategoryDecl;
 
+/// \brief Matches Objective-C category definitions.
+///
+/// Example matches Foo (Additions)
+/// \code
+///   @implementation Foo (Additions)
+///   @end
+/// \endcode
+const internal::VariadicDynCastAllOfMatcher<
+  Decl,
+  ObjCCategoryImplDecl> objcCategoryImplDecl;
+
 /// \brief Matches Objective-C method declarations.
 ///
 /// Example matches both declaration and definition of -[Foo method]
Index: lib/ASTMatchers/Dynamic/Registry.cpp
===================================================================
--- lib/ASTMatchers/Dynamic/Registry.cpp
+++ lib/ASTMatchers/Dynamic/Registry.cpp
@@ -374,6 +374,7 @@
   REGISTER_MATCHER(numSelectorArgs);
   REGISTER_MATCHER(ofClass);
   REGISTER_MATCHER(objcCategoryDecl);
+  REGISTER_MATCHER(objcCategoryImplDecl);
   REGISTER_MATCHER(objcImplementationDecl);
   REGISTER_MATCHER(objcInterfaceDecl);
   REGISTER_MATCHER(objcIvarDecl);
Index: unittests/ASTMatchers/ASTMatchersNodeTest.cpp
===================================================================
--- unittests/ASTMatchers/ASTMatchersNodeTest.cpp
+++ unittests/ASTMatchers/ASTMatchersNodeTest.cpp
@@ -1590,7 +1590,7 @@
     )));
 }
 
-TEST(ObjCDeclMacher, CoreDecls) {
+TEST(ObjCDeclMatcher, CoreDecls) {
   std::string ObjCString =
     "@protocol Proto "
     "- (void)protoDidThing; "
@@ -1605,6 +1605,9 @@
     "{ id _ivar; } "
     "- (void)anything {} "
     "@end "
+    "@implementation Thing (ABC) "
+    "- (void)abc_doThing {} "
+    "@end "
     ;
 
   EXPECT_TRUE(matchesObjC(
@@ -1616,6 +1619,9 @@
   EXPECT_TRUE(matchesObjC(
     ObjCString,
     objcCategoryDecl(hasName("ABC"))));
+  EXPECT_TRUE(matchesObjC(
+    ObjCString,
+    objcCategoryImplDecl(hasName("ABC"))));
   EXPECT_TRUE(matchesObjC(
     ObjCString,
     objcMethodDecl(hasName("protoDidThing"))));