Gary Richard Wheelock
- Bats Right, Throws Right
- Height 6' 3", Weight 205 lb.
- School Fullerton College, University of California, Irvine
- High School Troy High School (Fullerton)
- Debut September 17, 1976
- Final Game April 18, 1980
- Born November 29, 1951 in Bakersfield, CA USA
Gary Wheelock has been a coach in the Seattle Mariners organization since 1984. He pitched in the majors with the California Angels in 1976 and with the Mariners in 1977 and 1980, and had a minor league career of seven seasons. His 15-8 record for the 1976 Salt Lake City Gulls led the team in wins. He saw most of his action as a member of the expansion Mariners' starting rotation in the first half of their inaugural season in 1977.
He went to the University of California, Irvine in 1972-1974, not long after the college was established in 1965.
- 1981-1982 Pitching coach San Antonio Dodgers
- 1983-1986 Roving pitching instructor Seattle Mariners
- 1987 Pitching coach Oklahoma City 89ers
- 1988-1991 Pitching coach Bellingham Mariners
- 1992 Pitching coach San Bernardino Spirit
- 1996, 1998, 2003, 2007 Pitching Coach Everett AquaSox
- 2006, 2010-2011, 2015 Pitching coach AZL Mariners
- 2012 Seattle Mariners rehab pitching coordinator