John Michael Alt (born May 30, 1962 Stuttgart, Germany) is a former professional American football offensive tackle in the National Football League. He played his entire NFL career with the Kansas City Chiefs from 1984 to 1996. A graduate of Columbia Heights (MN) High School, he played his college years at the University of Iowa. After retiring from the NFL, Alt began assistant coaching at Cretin-Derham Hall High School in Saint Paul, Minnesota, working with the offensive line. He then went to Totino -Grace High School to teach offensive line when his son Joe started playing there. His son, Mark, was selected 53rd overall in the 2010 NHL Entry Draft by the Carolina Hurricanes, and currently plays hockey for the Colorado Avalanche.