Cornwallis (disambiguation)
- Baron Cornwallis
- CFB Cornwallis
- Charles Cornwallis, 1st Marquess Cornwallis
- Charles Cornwallis, 3rd Baron Cornwallis
- Cornouaille
- Cornouaille (disambiguation)
- Cornouailles
- Cornwall (disambiguation)
- Cornwallis (ship)
- Cornwallis Academy
- Cornwallis Beach
- Cornwallis Island (Nunavut)
- Cornwallis Island (South Shetland Islands)
- Cornwallis Junior High School
- Cornwallis Park
- Cornwallis River
- Cornwallis Square
- Cornwallis Township
- Cornwallis Valley Railway
- Cornwallis, Manitoba (rural municipality)
- Cornwallis, New South Wales
- Cornwallis, New Zealand
- Cornwallis, West Virginia
- Dauan Island
- Earl Cornwallis
- Edward Cornwallis
- Fort Cornwallis
- Frederick Cornwallis
- George Cornwallis-West
- HMS Cornwallis
- Kinahan Cornwallis
- Little Cornwallis Island
- Marquess Cornwallis
- SS Cornwallis
- Thomas Cornwallis
- Thomas Cornwallis (died 1604)
- William Cornwallis
- William Cornwallis (died 1614)
- William Cornwallis Symonds