Onion SportsDome is a parody sports television show from the makers of The Onion. The show premiered on Tuesday, January 11, 2011, at 10:30 p.m. EST on Comedy Central in the United States. It is seen in Canada on The Comedy Network.

The show is designed as a parody of SportsCenter and ESPN. Matt Walton and Matt Oberg play the co-anchors Alex Reiser and Mark Shepard, respectively. Melissa "Wellsy" Wells is portrayed by real-life sportscaster Danyelle Sargent. Gary Payton and Ahmad Bradshaw appeared on the show.

On April 4, 2011, USA Today reported the show, having completed its original 10-episode runs, was on hiatus and replaced in the time-slot by Sports Show with Norm Macdonald. On June 20, 2011, Deadline Hollywood confirmed that Comedy Central cancelled both SportsDome and Sports Show with Norm MacDonald.