The 1948 Michigan Wolverines football team represented the University of Michigan during the 1948 Big Nine Conference football season. In its first year under head coach Bennie Oosterbaan, Michigan compiled a 9–0 record, defeated six ranked opponents by a combined score of 122–17, won the Big Nine Conference and repeated as national champions. In the final AP Poll, Michigan received 192 first place votes, twice as many as second-place Notre Dame which garnered 97 first place votes. This remained the last unanimous national title won by the Wolverines until 2023.

Benjamin Oosterbaan was an American football end and head coach for the University of Michigan. He was a three-time All-American college football player, a two-time All-American basketball player, and an All-Big Ten Conference baseball player for the Michigan Wolverines. He is widely regarded as one of the greatest football players in Michigan history. He was selected by Sports Illustrated as the fourth greatest athlete in the history of the U.S. state of Michigan in 2003, and one of the eleven greatest college football players of the first century of the game. As a head coach Oosterbaan won a national championship with the 1948 Michigan Wolverines football team, by way of the Associated Press.