diff --git a/.kokoro/python3.5/common.cfg b/.kokoro/python3.5/common.cfg
deleted file mode 100644
index 676a3970b8a7..000000000000
--- a/.kokoro/python3.5/common.cfg
+++ /dev/null
@@ -1,45 +0,0 @@
-# Copyright 2019 Google LLC
-#
-# 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.
-
-# Format: //devtools/kokoro/config/proto/build.proto
-
-timeout_mins: 300
-
-# Configure the docker image for kokoro-trampoline.
-env_vars: {
-    key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/python-multi"
-}
-
-# Download trampoline resources.
-gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
-
-# Use the trampoline script to run in docker.
-build_file: "python-docs-samples/.kokoro/trampoline.sh"
-
-# Download secrets from Cloud Storage.
-gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/python-docs-samples"
-
-# Copy results for Resultstore
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.xml"
-  }
-}
-
-# Specify which tests to run
-env_vars: {
-    key: "RUN_TESTS_SESSION"
-    value: "py3-3.5"
-}
diff --git a/.kokoro/python3.5/continuous.cfg b/.kokoro/python3.5/continuous.cfg
deleted file mode 100644
index 90879b0bec7e..000000000000
--- a/.kokoro/python3.5/continuous.cfg
+++ /dev/null
@@ -1,21 +0,0 @@
-# Copyright 2020 Google LLC
-#
-# 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.
-
-# Format: //devtools/kokoro/config/proto/build.proto
-
-# Tell the trampoline which build file to use.
-env_vars: {
-    key: "TRAMPOLINE_BUILD_FILE"
-    value: "github/python-docs-samples/.kokoro/tests/run_tests.sh"
-}
diff --git a/.kokoro/python3.5/periodic.cfg b/.kokoro/python3.5/periodic.cfg
deleted file mode 100644
index 90879b0bec7e..000000000000
--- a/.kokoro/python3.5/periodic.cfg
+++ /dev/null
@@ -1,21 +0,0 @@
-# Copyright 2020 Google LLC
-#
-# 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.
-
-# Format: //devtools/kokoro/config/proto/build.proto
-
-# Tell the trampoline which build file to use.
-env_vars: {
-    key: "TRAMPOLINE_BUILD_FILE"
-    value: "github/python-docs-samples/.kokoro/tests/run_tests.sh"
-}
diff --git a/.kokoro/python3.5/presubmit.cfg b/.kokoro/python3.5/presubmit.cfg
deleted file mode 100644
index e9c6e483b1c7..000000000000
--- a/.kokoro/python3.5/presubmit.cfg
+++ /dev/null
@@ -1,21 +0,0 @@
-# Copyright 2019 Google LLC
-#
-# 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.
-
-# Format: //devtools/kokoro/config/proto/build.proto
-
-# Tell the trampoline which build file to use.
-env_vars: {
-    key: "TRAMPOLINE_BUILD_FILE"
-    value: "github/python-docs-samples/.kokoro/tests/run_tests_only_diff.sh"
-}
diff --git a/AUTHORING_GUIDE.md b/AUTHORING_GUIDE.md
index 79ffe8545a02..41451603d107 100644
--- a/AUTHORING_GUIDE.md
+++ b/AUTHORING_GUIDE.md
@@ -19,8 +19,8 @@ No matter what, all samples must:
 1. Be either a web application or a runnable console application.
 1. Have a `requirements.txt` containing all of its third-party dependencies. All
 requirements must be pinned.
-1. Work in Python 2.7, 3.5, 3.6, and 3.7. App Engine Standard is exempt as it
-   only supports 2.7. Our default version is currently Python 3.5.
+1. Work in Python 2.7, 3.6, and 3.7. App Engine Standard is exempt as it
+   only supports 2.7. Our default version is currently Python 3.6.
 1. Have tests.
 
 ## Style & linting
diff --git a/noxfile-template.py b/noxfile-template.py
index 4204daf27cad..c8248b060c8a 100644
--- a/noxfile-template.py
+++ b/noxfile-template.py
@@ -208,7 +208,7 @@ def py2(session, sample):
     _session_tests(session, sample)
 
 
-@nox.session(python=["3.5", "3.6", "3.7"])
+@nox.session(python=["3.6", "3.7"])
 @nox.parametrize("sample", NON_GAE_STANDARD_SAMPLES_PY3)
 def py3(session, sample):
     """Runs py.test for a sample using Python 3.x"""