Joseph Charles Steffan (born July 29, 1964) is an American lawyer and gay activist. He was expelled from the U.S. Naval Academy in Annapolis in 1987 shortly before graduation after disclosing his homosexuality. He sued the U.S. Department of Defense, claiming that his oral avowal of homosexuality could not be construed as an indication that he ever had or intended to engage in sexual relations with another man. He lost a protracted court battle for reinstatement in 1994.