diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg
new file mode 100644
index 0000000000000000000000000000000000000000..00157cc6fa3ea84130000abd46ee65db90a5b41d
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg
@@ -0,0 +1,25 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh"
+timeout_mins: 1440
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh
new file mode 100755
index 0000000000000000000000000000000000000000..079fbe18de3e993160ed17c0c0f0cf67a9105cd7
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+set -ex
+
+# change to grpc repo root
+cd $(dirname $0)/../../../..
+
+source tools/internal_ci/helper_scripts/prepare_build_linux_rc
+
+tools/run_tests/run_tests_matrix.py -f c asan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg
new file mode 100644
index 0000000000000000000000000000000000000000..a278111fecdd56a330f8d45d251c0c31662ec0e7
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg
@@ -0,0 +1,25 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh"
+timeout_mins: 1440
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh
new file mode 100755
index 0000000000000000000000000000000000000000..ca8cdfe9cfd17fc07f38d57f6a5a1b9cb164aaab
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+set -ex
+
+# change to grpc repo root
+cd $(dirname $0)/../../../..
+
+source tools/internal_ci/helper_scripts/prepare_build_linux_rc
+
+tools/run_tests/run_tests_matrix.py -f c msan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg
new file mode 100644
index 0000000000000000000000000000000000000000..2ca6d71e9be7020a9460795054b7b2ab0b6b96f0
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg
@@ -0,0 +1,25 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh"
+timeout_mins: 1440
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh
new file mode 100755
index 0000000000000000000000000000000000000000..4905e52b2709bc0bebd9d7c49bd76cb2ee7ac4ac
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+set -ex
+
+# change to grpc repo root
+cd $(dirname $0)/../../../..
+
+source tools/internal_ci/helper_scripts/prepare_build_linux_rc
+
+tools/run_tests/run_tests_matrix.py -f c tsan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg
new file mode 100644
index 0000000000000000000000000000000000000000..2c3df5eab7dc96dd734af465221e47eb47fb0ee4
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg
@@ -0,0 +1,25 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh"
+timeout_mins: 1440
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh
new file mode 100755
index 0000000000000000000000000000000000000000..b9ed67b9749a9ca9dfbed10204d8d95e6406f80e
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+set -ex
+
+# change to grpc repo root
+cd $(dirname $0)/../../../..
+
+source tools/internal_ci/helper_scripts/prepare_build_linux_rc
+
+tools/run_tests/run_tests_matrix.py -f c ubsan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg
new file mode 100644
index 0000000000000000000000000000000000000000..5d79e2649ed286f18915f4637eb5d9fe51400d61
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg
@@ -0,0 +1,25 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh"
+timeout_mins: 1440
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh
new file mode 100755
index 0000000000000000000000000000000000000000..e691d7ae70bf3b71ca41330fa4070532e73c062a
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+set -ex
+
+# change to grpc repo root
+cd $(dirname $0)/../../../..
+
+source tools/internal_ci/helper_scripts/prepare_build_linux_rc
+
+tools/run_tests/run_tests_matrix.py -f c++ asan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg
new file mode 100644
index 0000000000000000000000000000000000000000..fb6cf5adacf81028db45b8545c687991f8f41566
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg
@@ -0,0 +1,25 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh"
+timeout_mins: 1440
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh
new file mode 100755
index 0000000000000000000000000000000000000000..9a1b4b4cd03bedffc2c44386352ff3e12cf360d2
--- /dev/null
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+set -ex
+
+# change to grpc repo root
+cd $(dirname $0)/../../../..
+
+source tools/internal_ci/helper_scripts/prepare_build_linux_rc
+
+tools/run_tests/run_tests_matrix.py -f c++ tsan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600