Jamie Kaler (born September 14, 1964) is an American stand-up comedian and actor who has gained fame by portraying the character Mike Callahan on the TBS comedy "My Boys". He has appeared on such talk shows as the Late Late Show as well as having a role on the sitcom How I Met Your Mother, and had a recurring role on Will and Grace.

Kaler also lends his voice to the show Robot Chicken, as the suicidal blooper host. He is a member of the ACME Company, ACME Comedy Theatre's top-level sketch company and has also made guest appearances on Friends and Monk. Before beginning his comedic career, Kaler graduated from Boston University.