"Requiem for a Heavyweight" is a teleplay written by Rod Serling and produced for the live television show Playhouse 90 on 11 October 1956. Six years later, it was adapted into the 1962 feature film of the same name starring Anthony Quinn, Jackie Gleason, Mickey Rooney, and Julie Harris.

The teleplay won a Peabody Award, the first given to an individual script in television, and helped establish Serling's reputation. The broadcast was directed by Ralph Nelson and is generally considered one of the finest examples of live television drama in the United States, as well as being Serling's personal favorite of his own work. Nelson and Serling won Emmy Awards for their work.