After Wilkinson worked briefly for his father's mortgage company, he became an assistant coach at
Syracuse University and later at his alma mater, Minnesota. In 1943, he joined the
U.S. Navy where he was an assistant to
Don Faurot with the
Iowa Pre-Flight Seahawks football team. He served as a hangar deck officer on the . Following World War II,
Jim Tatum, the new head coach at the
University of Oklahoma, persuaded Wilkinson to join his staff in 1946. After one season in
Norman, Tatum left the
Sooners for the
University of Maryland. The 31-year-old Wilkinson was named head football coach and athletic director of the Sooners.
Head coach at Oklahoma In his first season as head coach in 1947, Wilkinson led Oklahoma to a 7–2–1 record and a share of the conference championship, the first of 13 consecutive
Big Six/Seven/Eight Conference titles. Ultimately, Wilkinson became one of the most celebrated college coaches of all time. His teams captured national championships in 1950, 1955, and 1956, and they amassed a 145–29–4 (.826) overall record. Twice Minnesota attempted to hire him away from Oklahoma, in 1950 and 1953, but both times Wilkinson rebuffed his alma mater. OU football was placed on major NCAA probation twice in a five-year span (1955 and 1960) during Wilkinson's tenure for illegally paying players out of a $125,000 slush fund for a decade and a half after World War II ended. The centerpiece of his time in Norman was a 47-game winning streak from 1953 to 1957, an
NCAA Division I record that still stands. It has been approached only four times: by
North Dakota State in
Division I FCS (39 wins, 2017–2021),
Toledo (35 wins, 1969–1971),
Miami (FL) (34 wins, 2000–2003), and
USC (34 wins, 2003–2005). Earlier, the Sooners ran off 31 consecutive wins from 1948 to 1950. Apart from two losses in 1951, Wilkinson's Sooners did not lose more than one game per season for 11 years between 1948 and 1958, going 107–8–2 over that period. His teams also went 12 consecutive seasons (1947–1958) without a loss in conference play, a streak which has never been seriously threatened. Wilkinson did not suffer his first conference loss until 1959 against
Nebraska, his 79th conference game. Wilkinson had only one losing season, in 1960. However, during that season Wilkinson still passed
Bennie Owen to become the winningest coach in Sooner history. Wilkinson's OU record has since been eclipsed by
Barry Switzer and
Bob Stoops. While coaching at OU, Wilkinson began writing a weekly newsletter to alumni during the season to keep them interested in Sooner football. He also became the first football coach to host his own television show. With Michigan State University coach
Duffy Daugherty, Wilkinson sponsored a series of clinics for high school coaches nationwide. Later, they turned their clinics into a profitable business. Following the 1963 season, his 17th at Oklahoma, Wilkinson retired from coaching at the age of 47.
President's Council on Physical Fitness with Bud Wilkinson in the
Oval Office in 1961 While at Oklahoma, Wilkinson served on the
President's Council on Physical Fitness from 1961 to 1964. He designed 11 floor exercises for schoolchildren that were incorporated into the song "
Chicken Fat", the theme song for President John F. Kennedy's youth fitness program, which was widely used in school gymnasiums across the country in the 1960s and 1970s. ==Later life and career==