Mac Wellman, born John McDowell Wellman on March 7, 1945, in Cleveland, Ohio, is an American playwright, author, and poet. He is best known for his experimental work in the theater which rebels against theatrical conventions, often abandoning such traditional elements as plot and character altogether. In 1990, he received an Obie Award for Best New American Play (for Bad Penny, Terminal Hip, and Crowbar). In 1991, he received another Obie Award for Sincerity Forever. He has received a Lila Wallace-Reader's Digest Writers Award, and the 2003 Obie Award for Lifetime Achievement, as well as the Foundation for Contemporary Arts Grants to Artists award (2003).