Timothy Michael Tierney (October 3, 1943 – September 15, 2012) was an American football player and coach.
[2] He played college football as San Francisco State University, earning All-Far Western Conference honors twice as a defensive back.
He moved on to Cal State Hayward in 1970 to serve as defensive coordinator under head football coach Les Davis.
[4] Tierney had the longest tenure, 19 seasons, of the four head coaches of the Cal State Hayward Pioneers football program.
After the dissolution of the football program following the 1993 season, Tierney remained at Cal State Hayward, working as a professor of kinesiology until 2001 and then serving as head coach of the men's and women's golf teams.