Leary may refer to: People King Leary or Lóegaire mac Néill, an Irish king Leary (surname) Places Leary, Georgia, U.S. Leary, Texas, U.S. Other uses Leary v. United States, a 1969 U.S. Supreme Court case Lt. Leary series, a science fiction novel series by David Drake USS Leary, three ships of the United States Navy See also O'Leary Lóegaire, an Irish anglicized to Leary