Michael Edward Shanahan (born August 24, 1952) is a former American football head coach, most recently for the Denver Broncos. He led the Broncos to back-to-back Super Bowl victories in 1998 and 1999. His son is the Houston Texans Offensive Coordinator Kyle Shanahan.

Shanahan played high school football at East Leyden High School, Franklin Park, Illinois where he played wishbone quarterback. He had the single-game rushing record until 1976 when it was broken by Dennis Cascio. The record is now held by Ricky Emery. Shanahan was an undersized quarterback at Eastern Illinois University in the 1970s before a hard hit on the practice field ruptured one of his kidneys, stopping his heart for thirty seconds and nearly killing him.

With his playing career abruptly ended, Shanahan entered coaching. After graduation, he served as an assistant coach at Northern Arizona University and the University of Oklahoma. He then returned to his alma mater as offensive coordinator and helped his school win the Division II football championship. Shanahan also worked at the University of Florida and the University of Minnesota, turning around both schools and making them into offensive powerhouses, before making the jump to the NFL.