John Vincent Hanrahan[1] (January 16, 1933 – April 28, 2008) was an American comedy writer.

[1] Following this, he moved on to Marcus Welby, M.D., The Sonny & Cher Comedy Hour, Police Woman, The Waltons, and CHiPs.

In the 1980s and '90s, he worked on a scattering of television shows and movies, including co-writing the Super Mario World episode "The Wheel Thing" and serving as one of four writers for the second season (1985–86) of the cartoon series Inspector Gadget, as well as writing & co-writing shorts for the 1980 revival of Tom & Jerry.

After friends in Eureka bought him a bus ticket, he returned to his hometown of Cleveland, where he remained homeless until his death.

Hanrahan was featured on the front page of The Plain Dealer (Cleveland, Ohio) on March 22, 2007, detailing his homelessness.