Thomas Michael Hennigan (born October 24, 1951) is an American former professional football player and college coach.

He played professionally as a linebacker in the National Football League (NFL) for the Detroit Lions from 1973 to 1975 New York Jets from 1976 to 1978.

[2][3] While at Tech, he was an all-Conference selection in 1972 when he helped lead the Golden Eagles to the Ohio Valley Conference championship.

[3] The next season, as a senior, Hennigan was once again all-conference and a College Football All-America Team honorable mention as he amassed 110 tackles.

Citing personal reasons and health concerns, Hennigan resigned as Tennessee Tech head coach in July, 2006.