Alan Hewitt was an American film, television, and stage actor. His most prominent TV roles were Detective Brennan in My Favorite Martian and the district attorney in How to Murder Your Wife.

My Favorite Martian is an American sitcom that aired on CBS from September 29, 1963, to May 1, 1966, for 107 episodes. The show stars Ray Walston as "Uncle Martin" and Bill Bixby as Tim O'Hara. The first two seasons, totaling 75 episodes, were in black and white, and the 32 episodes of the third and final season were filmed in color.