Kerwin is a surname. Notable individuals with this surname include:
Ashley Kerwin, fictional character in Degrassi: The Next Generation
Brian Kerwin, American actor
Cornelius M. Kerwin, American educator
James Kerwin, American film and theater director
James C. Kerwin, American jurist
John Kerwin, American talk-show host
Joseph P. Kerwin, American astronaut
Lance Kerwin, American actor
Larkin Kerwin, Canadian physicist
Patrick Kerwin, Canadian judge
Tom Kerwin, American basketball player
Walter T. Kerwin, Jr., American general