Peter Hannan (born August 13, 1954) is an artist and writer. He is the creator and executive producer of the Nickelodeon animated series, CatDog, overseeing all aspects (writing, storyboarding, character design, art direction, and post-production) of sixty-five half hours, including several holiday specials. Since most of the shows are made up of 11-minute episodes, this amounts to one hundred and twenty-something stories and at least one fistfight. He produced Fetch, the CatDog theatrical short subject for The Rugrats Movie as well as a ninety-minute television movie, CatDog and the Great Parent Mystery.

He has several new film and television projects in development (for little kids, big kids, and grown-ups), and is working behind the scenes or in collaboration with a variety of talented cohorts, writing show bibles, scripts, and treatments, creating/designing characters, art directing, and songwriting.