Kirwan
- A. D. Kirwan
- Annette Kirwan
- Barry Kirwan
- Carl Kirwan
- Château Kirwan
- Danny Kirwan
- Dervla Kirwan
- Edward Kirwan
- Eilis Kirwan
- Frances Kirwan
- James Kerwin
- John Kirwan (disambiguation)
- Joseph W. Kirwan
- Kairouan
- Kirwan, Queensland
- Larry Kirwan
- Laurence A. Kirwan
- Laurence P. Kirwan
- Michael J. Kirwan
- Nicholas Murray (Presbyterian)
- Richard Kirwan
- Tribes of Galway
- University System of Maryland
- William Burke Kirwan
- William Kirwan