Oliver Winston Wanger (born November 27, 1940) is a former United States district judge of the United States District Court for the Eastern District of California.

- Gender
- Male
- Race
- White
Prior employment
- Private practice, Fresno, California1969–1991, 2011–present
- San Joaquin College of Law, Fresno, CaliforniaAdjunct professor · 1970–1991
- ↳dean · 1980–1983
- Superior Court of California, County of FresnoSettlement conference judge pro tem · 1989
- Superior Court of California, County of FresnoJudge pro tem · 1988
- Mendota, CaliforniaCity attorney · 1975–1980
- Fresno County, CaliforniaDeputy district attorney · 1967–1969
- Humphrey College of LawAdjunct professor · 1968–1969
U.S. Marine Corps Reserve sergeant1960–1967
Appointments
1991–2011 · Appointed by George H.W. Bush (Republican)Term ended: Retirement
Education
- University of California, Berkeley, School of LawLL.B. · 1966
- University of Southern CaliforniaB.S. · 1963