diff --git a/third_party/2and3/pytz/__init__.pyi b/third_party/2and3/pytz/__init__.pyi
new file mode 100644
index 000000000..dc9c8fc4a
--- /dev/null
+++ b/third_party/2and3/pytz/__init__.pyi
@@ -0,0 +1,25 @@
+# Stubs for pytz (Python 3.5)
+
+import datetime as dt
+from typing import Optional, List, Set, Dict  # NOQA
+
+all_timezones = ...  # type: List
+all_timezones_set = ...  # type: Set
+common_timezones = ...  # type: List
+common_timezones_set = ...  # type: Set
+country_timezones = ...  # type: Dict
+country_names = ...  # type: Dict
+
+
+class UTC(dt.tzinfo):
+    zone = ...  # type: str
+    def fromutc(self, dt: dt.datetime) -> dt.datetime: ...
+    def utcoffset(self, dt: Optional[dt.datetime]) -> dt.timedelta: ...  # type: ignore
+    def tzname(self, dt: Optional[dt.datetime]) -> str: ...
+    def dst(self, dt: Optional[dt.datetime]) -> dt.timedelta: ...  # type: ignore
+    def localize(self, dt: dt.datetime, is_dst: bool=...) -> dt.datetime: ...
+    def normalize(self, dt: dt.datetime, is_dst: bool=...) -> dt.datetime: ...
+
+utc = ...  # type: UTC
+
+def timezone(zone: str) -> UTC: ...
diff --git a/third_party/2and3/pytz/lazy.pyi b/third_party/2and3/pytz/lazy.pyi
new file mode 100644
index 000000000..3618333e0
--- /dev/null
+++ b/third_party/2and3/pytz/lazy.pyi
@@ -0,0 +1,13 @@
+# Stubs for pytz.lazy (Python 3.5)
+
+from typing import Any, Iterable, List, Set, Dict  # NOQA
+from collections import Mapping
+
+class LazyDict(Mapping):
+    pass
+
+class LazyList(List):
+    pass
+
+class LazySet(Set):
+    pass