People whose family name is or was Kahn include
- Albert Kahn -- French banker
- Albert Kahn -- American industrial architect
- Gus Kahn -- musician and songwriter
- Gustave Kahn -- French poet
- Herman Kahn -- American futurologist
- Louis Kahn -- architect
- Madeline Kahn -- American actress
- Oliver Kahn -- German footballer
- Otto Hermann Kahn -- banker and patron of the arts
- Robert Kahn -- ARPANET (see also History of the Internet)
- Roger Wolfe Kahn -- jazz musician