Tillinghast may refer to:
Tillinghast L'Hommedieu Huston (1867–1938), American businessman, owner of New York Yankees, circa 1915 Tillinghast Mill Site, a Registered Historic Place in Rhode Island, United States Tillinghast Road Historic District, a Registered Historic Place in Rhode Island, United States Tillinghast Licht, a now defunct law firm in Rhode Island, United States Tillinghast, Nelson & Warren Inc., an American company that is now a part of Willis Towers Watson
See also Tillinghast (surname), an English surname