diff --git a/git_cache.py b/git_cache.py
index 6c4609c618..f581c9b626 100755
--- a/git_cache.py
+++ b/git_cache.py
@@ -8,7 +8,6 @@
 from __future__ import print_function
 
 import contextlib
-import errno
 import logging
 import optparse
 import os
diff --git a/infra_to_superproject.py b/infra_to_superproject.py
index f0305b5ac9..0140d43474 100644
--- a/infra_to_superproject.py
+++ b/infra_to_superproject.py
@@ -18,11 +18,8 @@ be used to restore your environment to its original state.
 import argparse
 import subprocess
 import os
-import platform
 import sys
 import shutil
-import json
-from pathlib import Path
 
 
 def main(argv):
diff --git a/my_activity.py b/my_activity.py
index 7fb0f1cf62..8db0b13f69 100755
--- a/my_activity.py
+++ b/my_activity.py
@@ -46,7 +46,6 @@ import logging
 from multiprocessing.pool import ThreadPool
 import optparse
 import os
-import subprocess
 from string import Formatter
 import sys
 import urllib
diff --git a/owners_finder.py b/owners_finder.py
index 98ea7e2510..d43145ae95 100644
--- a/owners_finder.py
+++ b/owners_finder.py
@@ -10,7 +10,6 @@ import os
 import copy
 
 
-import git_common
 import gclient_utils
 
 
diff --git a/rdb_wrapper.py b/rdb_wrapper.py
index cd41fcf2e3..b6021e627a 100644
--- a/rdb_wrapper.py
+++ b/rdb_wrapper.py
@@ -7,7 +7,6 @@ import contextlib
 import json
 import os
 import requests
-import time
 
 # Constants describing TestStatus for ResultDB
 STATUS_PASS = 'PASS'
diff --git a/setup_color.py b/setup_color.py
index 8fd669012f..40e96b5f6e 100644
--- a/setup_color.py
+++ b/setup_color.py
@@ -6,7 +6,6 @@
 from __future__ import print_function
 
 import ctypes
-import os
 import platform
 import subprocess
 import sys
diff --git a/split_cl.py b/split_cl.py
index 5587954034..16cb8f25de 100644
--- a/split_cl.py
+++ b/split_cl.py
@@ -12,7 +12,6 @@ import os
 import re
 import subprocess2
 import sys
-import tempfile
 
 import gclient_utils
 import git_footers
diff --git a/subprocess2.py b/subprocess2.py
index 7df49da112..2e97e35716 100644
--- a/subprocess2.py
+++ b/subprocess2.py
@@ -9,7 +9,6 @@ In theory you shouldn't need anything else in subprocess, or this module failed.
 
 import codecs
 import errno
-import io
 import logging
 import os
 import subprocess
@@ -19,12 +18,10 @@ import threading
 # Cache the string-escape codec to ensure subprocess can find it later.
 # See crbug.com/912292#c2 for context.
 if sys.version_info.major == 2:
-  import Queue
   codecs.lookup('string-escape')
   # Sends stdout or stderr to os.devnull.
   DEVNULL = open(os.devnull, 'r+')
 else:
-  import queue as Queue
   # pylint: disable=redefined-builtin
   basestring = (str, bytes)
   DEVNULL = subprocess.DEVNULL
diff --git a/upload_metrics.py b/upload_metrics.py
index 3e9b4c28ce..2174b0c1b1 100644
--- a/upload_metrics.py
+++ b/upload_metrics.py
@@ -4,7 +4,6 @@
 # found in the LICENSE file.
 
 import http
-import os
 import sys
 import urllib.error
 import urllib.request