diff --git a/tools/build_defs/d/d.bzl b/tools/build_defs/d/d.bzl
index 27943ffccca730..9e8164a0fe801e 100644
--- a/tools/build_defs/d/d.bzl
+++ b/tools/build_defs/d/d.bzl
@@ -14,6 +14,15 @@
 
 """D rules for Bazel."""
 
+load("//tools/build_rules:deprecation.bzl", "deprecated")
+
+def warning(rule):
+  print(deprecated(
+      "d",
+      rule,
+      "@bazel_tools//tools/build_defs/d:d.bzl",
+      "@io_bazel_rules_d//d:d.bzl"))
+
 A_FILETYPE = FileType([".a"])
 
 D_FILETYPE = FileType([
@@ -198,6 +207,7 @@ def _setup_deps(deps, name, working_dir):
 
 def _d_library_impl(ctx):
   """Implementation of the d_library rule."""
+  warning("d_library")
   d_lib = ctx.outputs.d_lib
 
   # Dependencies
@@ -296,14 +306,17 @@ def _d_binary_impl_common(ctx, extra_flags=[]):
 
 def _d_binary_impl(ctx):
   """Implementation of the d_binary rule."""
+  warning("d_binary")
   return _d_binary_impl_common(ctx)
 
 def _d_test_impl(ctx):
   """Implementation of the d_test rule."""
+  warning("d_test")
   return _d_binary_impl_common(ctx, extra_flags=["-unittest"])
 
 def _d_source_library_impl(ctx):
   """Implementation of the d_source_library rule."""
+  warning("d_library")
   transitive_d_srcs = set(order="compile")
   transitive_libs = set()
   transitive_imports = set()
@@ -345,6 +358,7 @@ def _d_docs_impl(ctx):
          documentation.
       2. Create a ZIP archive containing the HTML documentation.
   """
+  warning("d_docs")
   d_docs_zip = ctx.outputs.d_docs
   docs_dir = d_docs_zip.dirname + "/_d_docs"
   objs_dir = d_docs_zip.dirname + "/_d_objs"
@@ -504,6 +518,7 @@ filegroup(
 """
 
 def d_repositories():
+  warning("d_repositories")
   native.new_http_archive(
       name = "dmd_linux_x86_64",
       url = "http://downloads.dlang.org/releases/2.x/2.070.0/dmd.2.070.0.linux.tar.xz",
diff --git a/tools/build_defs/dotnet/csharp.bzl b/tools/build_defs/dotnet/csharp.bzl
index a7660a69787ca0..918aa38e01dc8f 100644
--- a/tools/build_defs/dotnet/csharp.bzl
+++ b/tools/build_defs/dotnet/csharp.bzl
@@ -14,6 +14,15 @@
 
 """CSharp bazel rules"""
 
+load("//tools/build_rules:deprecation.bzl", "deprecated")
+
+def warning(rule):
+  print(deprecated(
+      "dotnet",
+      rule,
+      "@bazel_tools//tools/build_defs/dotnet:csharp.bzl",
+      "@io_bazel_rules_dotnet//dotnet:csharp.bzl"))
+
 _MONO_UNIX_CSC = "/usr/local/bin/mcs"
 
 # TODO(jeremy): Windows when it's available.
@@ -161,8 +170,8 @@ def _cs_runfiles(ctx, outputs, depinfo):
         files = outputs,
         transitive_files = set(depinfo.dlls + depinfo.transitive_dlls) or None)
 
-
 def _csc_compile_impl(ctx):
+    warning("csharp_library")
     if hasattr(ctx.outputs, "csc_lib") and hasattr(ctx.outputs, "csc_exe"):
         fail("exactly one of csc_lib and csc_exe must be defined")
 
@@ -191,6 +200,7 @@ def _csc_compile_impl(ctx):
                   runfiles=runfiles)
 
 def _cs_nunit_run_impl(ctx):
+    warning("csharp_nunit_test")
     if hasattr(ctx.outputs, "csc_lib") and hasattr(ctx.outputs, "csc_exe"):
         fail("exactly one of csc_lib and csc_exe must be defined")
 
@@ -220,66 +230,75 @@ def _cs_nunit_run_impl(ctx):
 
 _COMMON_ATTRS = {
     # configuration fragment that specifies
-    "_flag_start": attr.string(default="-"),
+    "_flag_start": attr.string(default = "-"),
     # where the csharp compiler is.
-    "csc": attr.string(default=_MONO_UNIX_CSC),
+    "csc": attr.string(default = _MONO_UNIX_CSC),
     # code dependencies for this rule.
     # all dependencies must provide an out field.
-    "deps": attr.label_list(providers=["out", "target_type"]),
+    "deps": attr.label_list(providers = [
+        "out",
+        "target_type",
+    ]),
     # source files for this target.
-    "srcs": attr.label_list(allow_files = FileType([".cs", ".resx"])),
+    "srcs": attr.label_list(allow_files = FileType([
+        ".cs",
+        ".resx",
+    ])),
     # resources to use as dependencies.
     # TODO(jeremy): "resources_deps": attr.label_list(allow_files=True),
     #TODO(jeremy): # name of the module if you are creating a module.
     #TODO(jeremy): "modulename": attri.string(),
     # warn level to use
-    "warn": attr.int(default=4),
+    "warn": attr.int(default = 4),
     # define preprocessor symbols.
     #TODO(jeremy): "define": attr.string_list(),
 }
 
-_LIB_ATTRS={"_target_type": attr.string(default="library")}
+_LIB_ATTRS = {"_target_type": attr.string(default = "library")}
 
-_EXE_ATTRS={
-    "_target_type": attr.string(default="exe"),
+_EXE_ATTRS = {
+    "_target_type": attr.string(default = "exe"),
     # main class to use as entry point.
     "main_class": attr.string(),
 }
 
-_NUNIT_ATTRS={
-    "_nunit_exe": attr.label(default=Label("@nunit//:nunit_exe"),
-                             single_file=True),
-    "_nunit_framework": attr.label(default=Label("@nunit//:nunit_framework")),
-    "_nunit_exe_libs": attr.label(default=Label("@nunit//:nunit_exe_libs")),
+_NUNIT_ATTRS = {
+    "_nunit_exe": attr.label(
+        default = Label("@nunit//:nunit_exe"),
+        single_file = True,
+    ),
+    "_nunit_framework": attr.label(default = Label("@nunit//:nunit_framework")),
+    "_nunit_exe_libs": attr.label(default = Label("@nunit//:nunit_exe_libs")),
 }
 
-_LIB_OUTPUTS={
+_LIB_OUTPUTS = {
     "csc_lib": "%{name}.dll",
     "doc_xml": "%{name}.xml",
 }
 
-_BIN_OUTPUTS={
+_BIN_OUTPUTS = {
     "csc_exe": "%{name}.exe",
 }
 
 csharp_library = rule(
-    implementation=_csc_compile_impl,
-    attrs=_COMMON_ATTRS + _LIB_ATTRS,
+    attrs = _COMMON_ATTRS + _LIB_ATTRS,
     outputs = _LIB_OUTPUTS,
+    implementation = _csc_compile_impl,
 )
 
 csharp_binary = rule(
-    implementation=_csc_compile_impl,
-    attrs=_COMMON_ATTRS + _EXE_ATTRS,
+    attrs = _COMMON_ATTRS + _EXE_ATTRS,
+    executable = True,
     outputs = _BIN_OUTPUTS,
-    executable=True)
+    implementation = _csc_compile_impl,
+)
 
 csharp_nunit_test = rule(
-    implementation=_cs_nunit_run_impl,
-    executable=True,
-    attrs=_COMMON_ATTRS + _LIB_ATTRS +_NUNIT_ATTRS,
+    attrs = _COMMON_ATTRS + _LIB_ATTRS + _NUNIT_ATTRS,
+    executable = True,
     outputs = _LIB_OUTPUTS,
-    test=True
+    test = True,
+    implementation = _cs_nunit_run_impl,
 )
 
 NUNIT_BUILD_FILE = """
@@ -303,6 +322,7 @@ filegroup(
 """
 
 def csharp_repositories():
+  warning("csharp_repositories")
   native.new_http_archive(
       name = "nunit",
       build_file_content = NUNIT_BUILD_FILE,
diff --git a/tools/build_defs/groovy/groovy.bzl b/tools/build_defs/groovy/groovy.bzl
index c995b50b2e7ace..992e7caf1aa31e 100644
--- a/tools/build_defs/groovy/groovy.bzl
+++ b/tools/build_defs/groovy/groovy.bzl
@@ -12,10 +12,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+load("//tools/build_rules:deprecation.bzl", "deprecated")
+
+def warning(rule):
+  print(deprecated(
+      "groovy",
+      rule,
+      "@bazel_tools//tools/build_defs/groovy:groovy.bzl",
+      "@io_bazel_rules_groovy//groovy:groovy.bzl"))
+
 def _groovy_jar_impl(ctx):
   """Creates a .jar file from Groovy sources. Users should rely on
   groovy_library instead of using this rule directly.
   """
+  warning("groovy_jar")
   class_jar = ctx.outputs.class_jar
   build_output = class_jar.path + ".build_output"
 
@@ -112,6 +122,7 @@ def groovy_library(name, srcs=[], deps=[], **kwargs):
   .java sources. The result is wrapped in a java_import so that java rules may
   depend on it.
   """
+  warning("groovy_library")
   _groovy_jar(
       name = name + "-impl",
       srcs = srcs,
@@ -129,6 +140,7 @@ def groovy_and_java_library(name, srcs=[], deps=[], **kwargs):
   java_library. The groovy_library will depend on the java_library, so the
   Groovy code may reference the Java code but not vice-versa.
   """
+  warning("groovy_and_java_library")
   groovy_deps = deps
   jars = []
 
@@ -165,6 +177,7 @@ def groovy_binary(name, main_class, srcs=[], deps=[], **kwargs):
   """Rule analagous to java_binary that accepts .groovy sources instead of .java
   sources.
   """
+  warning("groovy_binary")
   all_deps = deps + ["//external:groovy"]
   if srcs:
     groovy_library(
@@ -190,6 +203,7 @@ def path_to_class(path):
     fail("groovy_test sources must be under src/test/java or src/test/groovy")
 
 def _groovy_test_impl(ctx):
+  warning("groovy_test")
   # Collect jars from the Groovy sdk
   groovy_sdk_jars = [file
       for file in ctx.files._groovysdk
@@ -283,6 +297,7 @@ def groovy_junit_test(
     jvm_flags=[],
     size="small",
     tags=[]):
+  warning("groovy_junit_test")
   groovy_lib_deps = deps + ["//external:junit"]
   test_deps = deps + ["//external:junit"]
 
@@ -330,6 +345,7 @@ def spock_test(
     jvm_flags=[],
     size="small",
     tags=[]):
+  warning("spock_test")
   groovy_lib_deps = deps + [
     "//external:junit",
     "//external:spock",
@@ -376,6 +392,7 @@ def spock_test(
   )
 
 def groovy_repositories():
+  warning("groovy_repositories")
   native.new_http_archive(
     name = "groovy_sdk_artifact",
     url = "http://dl.bintray.com/groovy/maven/apache-groovy-binary-2.4.4.zip",
diff --git a/tools/build_defs/sass/sass.bzl b/tools/build_defs/sass/sass.bzl
index 97ecfd57e424af..4ae978a1a1797e 100644
--- a/tools/build_defs/sass/sass.bzl
+++ b/tools/build_defs/sass/sass.bzl
@@ -12,7 +12,19 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-SASS_FILETYPES = FileType([".sass", ".scss"])
+load("//tools/build_rules:deprecation.bzl", "deprecated")
+
+def warning(rule):
+  print(deprecated(
+      "sass",
+      rule,
+      "@bazel_tools//tools/build_defs/sass:sass.bzl",
+      "@io_bazel_rules_sass//sass:sass.bzl"))
+
+SASS_FILETYPES = FileType([
+    ".sass",
+    ".scss",
+])
 
 def collect_transitive_sources(ctx):
     source_files = set(order="compile")
@@ -21,6 +33,7 @@ def collect_transitive_sources(ctx):
     return source_files
 
 def _sass_library_impl(ctx):
+    warning("sass_library")
     transitive_sources = collect_transitive_sources(ctx)
     transitive_sources += SASS_FILETYPES.filter(ctx.files.srcs)
     return struct(
@@ -30,6 +43,7 @@ def _sass_library_impl(ctx):
 def _sass_binary_impl(ctx):
     # Reference the sass compiler and define the default options
     # that sass_binary uses.
+    warning("sass_binary")
     sassc = ctx.file._sassc
     options = [
         "--style={0}".format(ctx.attr.output_style),
@@ -55,7 +69,6 @@ sass_deps_attr = attr.label_list(
 )
 
 sass_library = rule(
-    implementation = _sass_library_impl,
     attrs = {
         "srcs": attr.label_list(
             allow_files = SASS_FILETYPES,
@@ -64,10 +77,10 @@ sass_library = rule(
         ),
         "deps": sass_deps_attr,
     },
+    implementation = _sass_library_impl,
 )
 
 sass_binary = rule(
-    implementation = _sass_binary_impl,
     attrs = {
         "src": attr.label(
             allow_files = SASS_FILETYPES,
@@ -86,6 +99,7 @@ sass_binary = rule(
         "css_file": "%{name}.css",
         "css_map_file": "%{name}.css.map",
     },
+    implementation = _sass_binary_impl,
 )
 
 LIBSASS_BUILD_FILE = """
@@ -124,6 +138,7 @@ cc_binary(
 """
 
 def sass_repositories():
+  warning("sass_repositories")
   native.new_http_archive(
       name = "libsass",
       url = "https://github.com/sass/libsass/archive/3.3.0-beta1.tar.gz",
diff --git a/tools/build_rules/appengine/appengine.bzl b/tools/build_rules/appengine/appengine.bzl
index 441a1ffb78ab4e..1abbc83a443220 100644
--- a/tools/build_rules/appengine/appengine.bzl
+++ b/tools/build_rules/appengine/appengine.bzl
@@ -64,6 +64,15 @@ APP_ID. If not specified, it uses the default APP_ID provided in the application
 web.xml.
 """
 
+load("//tools/build_rules:deprecation.bzl", "deprecated")
+
+def warning(rule):
+  print(deprecated(
+      "appengine",
+      rule,
+      "@bazel_tools//tools/build_rules/appengine:appengine.bzl",
+      "@io_bazel_rules_appengine//appengine:appengine.bzl"))
+
 jar_filetype = FileType([".jar"])
 
 def _add_file(in_file, output, path = None):
@@ -99,6 +108,7 @@ def _short_path_dirname(path):
   return sp[0:len(sp)-len(path.basename)-1]
 
 def _war_impl(ctxt):
+  warning("appengine_war")
   zipper = ctxt.file._zipper
 
   data_path = ctxt.attr.data_path
@@ -231,6 +241,7 @@ appengine_war = rule(
 )
 
 def java_war(name, data=[], data_path=None, **kwargs):
+  warning("java_war")
   native.java_library(name = "lib%s" % name, **kwargs)
   appengine_war(name = name,
                 jars = ["lib%s" % name],
@@ -261,6 +272,7 @@ filegroup(
 """
 
 def appengine_repositories():
+  warning("appengine_repositories")
   native.new_http_archive(
       name = "com_google_appengine_java",
       url = "http://central.maven.org/maven2/com/google/appengine/appengine-java-sdk/1.9.23/appengine-java-sdk-1.9.23.zip",
diff --git a/tools/build_rules/deprecation.bzl b/tools/build_rules/deprecation.bzl
new file mode 100644
index 00000000000000..e85953e8317c6a
--- /dev/null
+++ b/tools/build_rules/deprecation.bzl
@@ -0,0 +1,27 @@
+#
+# Copyright 2016 The Bazel Authors. All rights reserved.
+#
+# 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.
+
+def deprecated(language, rule, old_path, new_path):
+  return """This rule has moved out of @bazel_tools!
+
+The {0} rules have moved to https://github.com/bazelbuild/rules_{0}, you
+should now refer them via @io_bazel_rules_{0}, use:
+
+load('{3}', '{1}')
+
+instead of:
+
+load('{2}', '{1}')
+""".format(language, rule, old_path, new_path)
diff --git a/tools/build_rules/go/def.bzl b/tools/build_rules/go/def.bzl
index 9d7abce0d40798..32800ce553214f 100644
--- a/tools/build_rules/go/def.bzl
+++ b/tools/build_rules/go/def.bzl
@@ -26,6 +26,15 @@ In order of priority:
 
 """
 
+load("//tools/build_rules:deprecation.bzl", "deprecated")
+
+def warning(rule):
+  print(deprecated(
+      "go",
+      rule,
+      "@bazel_tools//tools/build_rules/go:def.bzl",
+      "@io_bazel_rules_go//go:def.bzl"))
+
 _DEFAULT_LIB = "go_default_library"
 
 _VENDOR_PREFIX = "/vendor/"
@@ -48,6 +57,7 @@ def _go_prefix_impl(ctx):
 
 def _go_prefix(ctx):
   """slash terminated go-prefix"""
+  warning("go_prefix")
   prefix = ctx.attr.go_prefix.go_prefix
   if prefix != "" and not prefix.endswith("/"):
     prefix = prefix + "/"
@@ -193,6 +203,7 @@ def emit_go_compile_action(ctx, sources, deps, out_lib):
 
 def go_library_impl(ctx):
   """Implements the go_library() rule."""
+  warning("go_library")
 
   sources = set(ctx.files.srcs)
   deps = ctx.attr.deps
@@ -255,6 +266,7 @@ def emit_go_link_action(ctx, transitive_libs, lib, executable):
 
 def go_binary_impl(ctx):
   """go_binary_impl emits actions for compiling and linking a go executable."""
+  warning("go_binary")
   lib_result = go_library_impl(ctx)
   executable = ctx.outputs.executable
   lib_out = ctx.outputs.lib
@@ -273,6 +285,8 @@ def go_test_impl(ctx):
   It emits an action to run the test generator, and then compiles the
   test into a binary."""
 
+  warning("go_test")
+
   lib_result = go_library_impl(ctx)
   main_go = ctx.outputs.main_go
   prefix = _go_prefix(ctx)
@@ -367,7 +381,8 @@ go_test = rule(
         "test_generator": attr.label(
             executable = True,
             default = Label(
-                "@bazel_tools//tools/build_rules/go/tools:generate_test_main"),
+                "@bazel_tools//tools/build_rules/go/tools:generate_test_main",
+            ),
             cfg = HOST_CFG,
         ),
     },
@@ -397,6 +412,7 @@ filegroup(
 """
 
 def go_repositories():
+  warning("go_repositories")
   native.new_http_archive(
     name=  "golang_linux_amd64",
     url = "https://storage.googleapis.com/golang/go1.5.1.linux-amd64.tar.gz",