Mark Sullivan

Mark Sullivan may refer to:
 * Mark J. Sullivan, director of the United States Secret Service, 2006–2013
 * Mark Sullivan (cricketer) (born 1964), South African cricketer
 * Mark T. Sullivan (born 1958), American author of mystery and suspense novels
 * Mark Sullivan (judge) (1911–2001), justice on the New Jersey Supreme Court, 1973–1981
 * Mark Sullivan (public servant), former secretary of the Australian Government Department of Veterans' Affairs
 * Mark Sullivan, founder Snowboard Magazine
 * Mark Sullivan, keyboardist for several California bands including Toiling Midgets
 * Mark Sullivan, chief scientist for Eagle Eye Technologies, Inc, later SkyBitz
 * Mark Sullivan (visual effects artist), Academy Award nominated visual effects artist
 * Mark Sullivan (American football), American football coach
 * Mark Sullivan (journalist) (1874–1952), American political commentator
 * Mark Sullivan (runner), winner of the 1988 4 × 800 meter relay at the NCAA Division I Indoor Track and Field Championships