Francis Joseph Mullin (December 16, 1906 – February 13, 1997),[1][2] also often known as F.J. Mullin or Joe Mullin, was an American academic and the seventh president of Shimer College. He was raised Catholic, but became an Episcopalian as a teenager.[3] He was key in engineering Shimer's brief period as an Episcopal-affiliated college; the school had previously had a Baptist affiliation.[4][5]