Frank Gansz (November 22, 1938 – April 27, 2009) was an American football coach whose career spanned nearly 40 years. He died in Dallas on April 27, 2009, from complications following knee replacement surgery.

At the college level, Gansz served as an assistant at Colgate, Oklahoma State, SMU, Army, UCLA, Air Force and Navy, his alma mater (1960).

In January 1986, Gansz was named assistant head coach and special teams coach for the Kansas City Chiefs. He took over as head coach of the Chiefs in January 1987 after John Mackovic was fired. In his first year, a strike-shortened season, he finished 4-11. The following year, he went 4-11-1. In January 1989, Gansz was fired and replaced by Marty Schottenheimer.

Once called "the best special teams coach ever" by former NFL head coach Dick Vermeil, Gansz twice earned special teams coach of the year honors, including 1999 when helped the St. Louis Rams to a Super Bowl victory.

A native of Altoona, Pennsylvania, Gansz retired as an NFL coach in 2001 after coaching in the league for 24 seasons, including stops in San Francisco, Cincinnati, Philadelphia, Detroit, Atlanta and Jacksonville. After retirement, he lived in Atlanta, Georgia, with his wife Barbara, though he continued to speak at colleges and clinics around the country.