Kirn is a surname. Notable people with the surname include:

• Hans Kirn (1920–2007), German Luftwaffe pilot
• Louis Joseph Kirn, United States Navy admiral
• Roman Kirn, Permanent Representative of Slovenia to the United Nations
• Walter Kirn, American novelist and critic

• Gerald Dickens
• Gerald Dickens (disambiguation)
• Gerald Di Pego
• Gerald (disambiguation)
• Gerald Dixon
• Gerald D. Morgan
• Gerald Dobbs
• Gerald Donnelly
• Gerald Douglas
• Gerald D. Putnam
• Gerald Dreyer
• Gerald Drucker
• Gerald Duckworth and Company Ltd
• Gerald Dworkin
• Gerald dworkin
• Gerald Eastmure (cricketer)
• Gerald Eaves
• Gerald E. Bentley
• Gerald Eberlein
• Gerald E. Brookins Museum of Electric Railways
• Gerald E. Brown
• Gerald E. Carter
• Gerald Eckert
• Gerald E. Connolly
• Gerald Edward Brown