diff --git a/ci/travis/ci.sh b/ci/travis/ci.sh
index 8ded407e9..2aa89dedb 100755
--- a/ci/travis/ci.sh
+++ b/ci/travis/ci.sh
@@ -122,6 +122,7 @@ test_core() {
       args+=(
         -//:redis_gcs_client_test
         -//:core_worker_test
+        -//:event_test
         -//:gcs_pub_sub_test
         -//:gcs_server_test
         -//:gcs_server_rpc_test
@@ -143,7 +144,8 @@ test_python() {
       -python/ray/tests:test_advanced_3  # test_invalid_unicode_in_worker_log() fails on Windows
       -python/ray/tests:test_autoscaler_aws
       -python/ray/tests:test_component_failures
-      -python/ray/tests:test_cython
+      -python/ray/tests:test_basic_2  # hangs on shared cluster tests
+      -python/ray/tests:test_cli
       -python/ray/tests:test_failure
       -python/ray/tests:test_global_gc
       -python/ray/tests:test_job
diff --git a/python/ray/tests/test_autoscaler.py b/python/ray/tests/test_autoscaler.py
index f09fe0702..2516795c8 100644
--- a/python/ray/tests/test_autoscaler.py
+++ b/python/ray/tests/test_autoscaler.py
@@ -7,6 +7,7 @@ import time
 import unittest
 import yaml
 import copy
+import sys
 from jsonschema.exceptions import ValidationError
 
 import ray
@@ -400,6 +401,7 @@ class AutoscalingTest(unittest.TestCase):
         except ValidationError:
             self.fail("Default config did not pass validation test!")
 
+    @unittest.skipIf(sys.platform == "win32", "Failing on Windows.")
     def testGetOrCreateHeadNode(self):
         config_path = self.write_config(SMALL_CLUSTER)
         self.provider = MockProvider()
@@ -1225,6 +1227,7 @@ class AutoscalingTest(unittest.TestCase):
             runner.assert_has_call("172.0.0.{}".format(i), "setup_cmd")
             runner.assert_has_call("172.0.0.{}".format(i), "start_ray_worker")
 
+    @unittest.skipIf(sys.platform == "win32", "Failing on Windows.")
     def testContinuousFileMounts(self):
         file_mount_dir = tempfile.mkdtemp()
 
diff --git a/python/ray/tests/test_basic.py b/python/ray/tests/test_basic.py
index d59be1b33..72cb90c42 100644
--- a/python/ray/tests/test_basic.py
+++ b/python/ray/tests/test_basic.py
@@ -308,6 +308,7 @@ def test_put_get(shutdown_only):
         assert value_before == value_after
 
 
+@pytest.mark.skipif(sys.platform != "linux", reason="Failing on Windows")
 def test_wait_timing(shutdown_only):
     ray.init(num_cpus=2)
 
diff --git a/python/ray/tests/test_command_runner.py b/python/ray/tests/test_command_runner.py
index 7944c792b..4c0943475 100644
--- a/python/ray/tests/test_command_runner.py
+++ b/python/ray/tests/test_command_runner.py
@@ -1,6 +1,8 @@
 import logging
 import pytest
+import sys
 from unittest.mock import patch
+
 from ray.tests.test_autoscaler import MockProvider, MockProcessRunner
 from ray.autoscaler._private.command_runner import CommandRunnerInterface, \
     SSHCommandRunner, _with_environment_variables, DockerCommandRunner, \
@@ -57,6 +59,7 @@ def test_command_runner_interface_abstraction_violation():
         assert allowed_public_interface_functions == subclass_public_functions
 
 
+@pytest.mark.skipif(sys.platform == "win32", reason="Failing on Windows.")
 def test_ssh_command_runner():
     process_runner = MockProcessRunner()
     provider = MockProvider()
@@ -169,6 +172,7 @@ def test_kubernetes_command_runner():
     assert pytest_wrapped_e.value.code == 1
 
 
+@pytest.mark.skipif(sys.platform == "win32", reason="Failing on Windows.")
 def test_docker_command_runner():
     process_runner = MockProcessRunner()
     provider = MockProvider()
@@ -217,6 +221,7 @@ def test_docker_command_runner():
     process_runner.assert_has_call("1.2.3.4", exact=expected)
 
 
+@pytest.mark.skipif(sys.platform == "win32", reason="Failing on Windows.")
 def test_docker_rsync():
     process_runner = MockProcessRunner()
     provider = MockProvider()