Michael Mullen O'Hara (born October 10, 1959) is an American educator, author, and historian of theatre.
He attended Hopewell Valley Central High School and received a Bachelor of Arts degree in English/Drama from Fordham University.
He received his Master of Arts in theatre history in 1990 at the University of Maryland, College Park.
Since 1997, O'Hara has been a professor of theater at Ball State University, where he now sits as the Associate Dean of the Department of Fine Arts.
Pearson Education published his digital text book Explore Theatre in 2012.