Mark Sorensen Jr. wurde am 4 März 1962 in Philadelphia, Pennsylvania, USA geboren. Er war Schauspieler, bekannt für Philadelphia (1993). Er starb am 17 September 1993 in Pennsylvania, USA.
One of the many AIDS patients who appeared in Philadelphia (1993), he was staying at his parents' home when Jonathan Demme rushed him an unedited videotape of the movie during post-production; Sorensen died the following day. Tom Hanks paid tribute to him in his Golden Globe acceptance speech the following January.
