Mark Thomas Mangino (born August 26, 1956) is a former American college football coach. He served as the head football coach at the University of Kansas from 2002 to 2009. In 2007, Mangino received several national coach of the year honors after leading the Jayhawks to their only 12-win season in school history and an Orange Bowl victory. However, he resigned as coach at Kansas two seasons later following allegations of mistreatment of players. While at Kansas, Mangino coached in four bowl games with a 3–1 record, the lone loss coming in the 2003 Tangerine Bowl. Additionally, in five of his eight seasons at Kansas, the Jayhawks were Bowl eligible; they had been bowl eligible only five times in the previous thirty seasons. He held multiple assistant coaching jobs before becoming the head coach at Kansas, the longest being an eight season stint at Kansas State as their running game coordinator.

Mangino was born and raised in New Castle, Pennsylvania. After high school, he was offered a football scholarship at Youngstown State. Mangino played semi-pro baseball in western Pennsylvania until he became an EMT. In his late 20s he returned to Youngstown State to complete his studies and earn his degree.

Mangino graduated from Youngstown State University in 1987, serving as an assistant coach there in his last two years under then-head coach Jim Tressel. He also coached at Lincoln High School in Ellwood City, Pennsylvania and at Geneva College, before being hired as an assistant coach at Kansas State University in 1991. Prior to the 1999 season, Mangino left Kansas State to take an assistant position at the University of Oklahoma. While there, he served as the offensive coordinator for the Oklahoma team that beat the defending national champion Florida State Seminoles in the 2000 national championship. Following that season, he was awarded the Frank Broyles Award as the nation's top assistant coach.

Mangino was hired as Kansas' head football coach in December 2001. The program had not posted a winning season in any of the 6 seasons prior to his arrival. In 2003, his second season at KU, Mangino led the Jayhawks to an appearance in the 2003 Tangerine Bowl (now known as the Camping World Bowl). This was the first bowl appearance for Kansas since 1995. In 2005, his fourth season at KU, the team finished the regular season 6–5, to post its first winning record under Mangino, and went on to the Fort Worth Bowl, its second bowl game in three seasons. Among the Jayhawks' wins was a 40–15 victory over Nebraska, breaking a losing streak against the Cornhuskers that had begun in 1969, which was the second-longest such streak of consecutive losses in NCAA history. The same year Mangino also built a defense that ranked 11th nationally (based on yards allowed per game) and featured third-team All-American and Big 12 Conference Defensive Player of the Year linebacker Nick Reid. The 2005 team also ranked 6th nationally in total punts.

In 2007, Mangino led the Jayhawks to arguably the greatest season in school history. The Jayhawks finished with a 12–1 record and a share of the Big 12 North title, rising as high as second in both major polls at one point. Only a loss to then third-ranked Missouri cost the Jayhawks a berth in the Big 12 Championship Game. The Jayhawks won the 2008 Orange Bowl (their first ever BCS appearance, and only the third major-bowl appearance in school history). The 12 wins are a school record for wins in a season; it was only the fourth 10-win season in school history. Mangino's defense was ranked 12th in the nation, and 4th in scoring defense. On the other side of the ball, the Jayhawks finished 2nd in scoring offense.

Following the win against the Iowa State Cyclones, Mangino became the first KU football coach with a winning career record since Jack Mitchell in 1966. Mangino's Jayhawks spent 19 consecutive weeks ranked in the AP and/or USA Today polls (2007–08), won 20 games in a 2-year period for the first time in school history, set home attendance average records in each of the last 4 seasons (2004–2008), tallied KU's first appearance in national polls since 1996 and to the school’s highest ranking ever at #2, produced the top 3 total offense seasons in school history, the top two passing seasons and two of the top three scoring seasons and won three Bowl games—the same number they had won in their entire 102-year football history prior to his arrival.

Mangino's 50 wins are the second-most in school history. He is also the only coach since the end of World War II to leave Kansas with a winning record.

For his accomplishments in 2007, Mangino was named the 2007 National Coach of the Year by the Associated Press, ESPN/ABC, The Sporting News, Football Writers Association, Walter Camp Football Foundation, National Sportscasters and Sportswriters Association, American Football Coaches Association, the Maxwell Football Club (George Munger Award), and he has been named the Woody Hayes National Coach of the Year. He was named the Big 12 Coach of the Year by the Big 12 Coaches and Big 12 Co-Coach of the Year by the Associated Press. Upon winning these Coach of the Year awards, he became the only NCAA coach in history to win both the Frank Broyles Award as the nation's top assistant coach and all the major National Coach of the Year awards.