| First Name | Michael |
| Last Name | Ontkean |
| Full Name at Birth | Michael Leonard Ontkean |
| Age | 66 |
| Date of Birth | January 24, 1946 |
| Birthplace | Vancouver, British Columbia, Canada |
| Height | 6' (183 cm) |
| Build | Athletic |
| Eye Color | Brown - Dark |
| Hair Color | Brown - Light |
| Star Sign | Aquarius |
| Ethnicity | White |
| Nationality | Canadian |
| High School | St. Michael`s College School, Toronto |
| University | University of New Hampshire NH (1970) |
| Occupation Category | Actor |
| Claim to Fame | Officer Willie Gillis, The Rookies |
| Father | Leonard Ontkean |
| Mother | Muriel Cooper |
| Sister(s) | Sheri |
Michael Leonard Ontkean (born 24 January 1946) is a Canadian actor. He is best known for the 1970s crime drama The Rookies, the film Slap Shot (1977), and the cult-favorite TV series Twin Peaks (1990 - 1991).
Selected Michael Ontkean film and TV show credits: