Hatter (disambiguation)
- Clyde Hatter
- Danbury Hatters
- Hamilton Hatter
- Hattar (disambiguation)
- Hatter (Alice's Adventures in Wonderland)
- Háttér Society
- Luton Town F.C.
- Mad Hatter (disambiguation)
- Mad as a hatter (disambiguation)
- Maddelynn Hatter
- Madison Hatters
- Marilyn Harris (writer)
- Medicine Hat
- Stetson Hatters
- Steve Hatter
- Stockport County F.C.
- Terry J. Hatter Jr.
- Tony Hatter