Mark Sullivan may refer to:
- Mark J. Sullivan, Director of the United States Secret Service, 2006-
- Mark Sullivan (cricketer) (born 1964), South African cricketer
- Mark T. Sullivan, American author of mystery and suspense novels
- Mark Sullivan (jurist) (1911–2001), justice on the New Jersey Supreme Court, 1973–1981
- 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
Famous quotes containing the words mark and/or sullivan:
“Do you but mark how this becomes the house!
“Dear daughter, I confess that I am old;
Age is unnecessary. On my knees I beg
That you’ll vouchsafe me raiment, bed, and food.””
—William Shakespeare (1564–1616)
“Form ever follows function.”
—Louis Henry Sullivan (1856–1924)