As of July 2026, Michael Ontkean is best known for Twin Peaks and The Rookies. Find every show and movie Michael Ontkean has starred in — and where to watch them — below.
Michael Ontkean

Michael Ontkean

Actor Born 1946 Vancouver, British Columbia, Canada 2 TV Shows 8 Movies

Michael Leonard Ontkean (born January 24, 1946) is a Canadian retired actor. Born and raised in Vancouver, British Columbia, Ontkean relocated to the United States to attend the University of New Hampshire on a hockey scholarship before pursuing a career in acting in the early 1970s.

He initially came to prominence portraying Officer Willie Gillis on the crime drama series The Rookies from 1972 to 1974, followed by lead roles in the hockey sports comedy film Slap Shot (1977) and the romantic comedy Willie & Phil (1980). In 1982, he had a starring role opposite Harry Hamlin and Kate Jackson in the drama Making Love, in which he portrayed a married man who comes to terms with his homosexuality. Ontkean continued to appear in films, such as Clara's Heart (1988) and Postcards from the Edge (1990) before being cast as Sheriff Harry S. Truman on David Lynch's Twin Peaks (1990–1991), the role for which he is best known.

Michael Ontkean's screen work to date leans strongly toward Drama and Comedy, a consistent thread across his credits so far.

Michael Ontkean's most notable role to date came in The Descendants (2011), where he played Cousin Milo. He also appeared in Twin Peaks (1990) as Harry S. Truman. Most recently appeared in Twin Peaks (1989) as Sheriff Harry S. Truman.

Fans wanting to catch up on Michael Ontkean's work can find exactly where his shows and movies are streaming below — and TV Butler Pro makes it effortless to keep track of them all. Just search the title, and Butler finds it instantly, tells you which service has it, and remembers what you've already watched.

or
TV Butler Pro app
🎩 TV Butler Pro — Free to Use
Search or tap a mood. Butler finds it, tracks it, remembers it — all for free.

📺 Michael Ontkean's TV Shows

Twin Peaks
Harry S. Truman
1990
The Rookies
Willie Gillis
1972

🎬 Michael Ontkean's Movies

The Descendants
Cousin Milo
2011
Slap Shot
Ned Braden
1977
Postcards from the Edge
Robert Munch
1990
Twin Peaks
Sheriff Harry S. Truman
1989
The Blood of Others
Jean
1984
Mrs. Ashboro's Cat
Wes Merritt
2003
Twin Peaks: The Missing Pieces
Sheriff Harry S. Truman
2014
Willie & Phil
Willie Kaufman
1980

Never Miss a Show Starring Michael Ontkean

TV Butler Pro™ tracks everything you watch, finds where to stream any show or movie — free to use, opens right in your browser.

🎩 Try TV Butler Pro™ Free