in the United StatesUnion Club of Boston, MassachusettsUnion Club of the City of New YorkPacific-Union Club, in San Francisco, CaliforniaAtherton Hotel at Oklahoma State University, originally the "Union Club"otherUnion Club (UK), a London gentlemen's club in Trafalgar Square, 1827–1923Union Club, fictional club in short stories by Isaac Asimov, many in The Union Club Mysteriesreference