Steven Kampmann (born May 31, 1947) is an American actor, writer, and director. He was born in Philadelphia, Pennsylvania. He is best known for his role as Kirk Devane on the first two seasons of Newhart.

Kampmann also had roles in The Rodney Dangerfield Show: It's Not Easy Bein' Me, L.A. Law, The Richest Cat in the World, Multiplicity, and Analyze That. Additionally, he was a writer for WKRP in Cincinnati. In 1981, he was nominated for a Primetime Emmy Award for Outstanding Comedy Series for his work on WKRP in Cincinnati. His screenplay credits include Back to School, The Couch Trip and Stealing Home.

In 2008, Kampmann wrote and directed Buzzkill, a film about a struggling writer who becomes famous when a serial killer steals his car and the newest draft of his script.

Kampmann is married to actress Judith Kahan and has four children. He is also the uncle of Katie Kampmann.