Union Square may refer to:
Places United States Union Square, Baltimore, Maryland Union Square, Boston, Massachusetts Union Square station (Allston), a former Massachusetts Bay Transportation Authority station on the Green Line A branch Union Square (Greensboro), North Carolina Union Square Park, adjacent to Springfield Union Station, Springfield, Illinois Union Square, Manhattan, New York 14th Street–Union Square station, a New York City Subway station on the BMT Broadway Line, the BMT Canarsie Line and the IRT Lexington Avenue Line Union Square (Salt Lake City), Utah Union Square, San Francisco, California Union Square/Market Street station, a Muni Metro station on the Central Subway of the T Third Street line Union Square (Seattle), Washington Union Square (Somerville), Massachusetts Union Square station (Somerville), a Massachusetts Bay Transportation Authority station on the Green Line D branch Union Square (Washington, D.C.)
Other places Union Square, a shopping centre in Brunswick West, Victoria, Australia Union Square, Nova Scotia, Canada Union Square (Hong Kong), in Kowloon to the west of Kwun Chung and the northwest of Tsim Sha Tsui Union Square, Lima, Peru, since renamed after Ramón Castilla Union Square Aberdeen, Scotland, a leisure/retail/transport hub in Aberdeen Union Square Saigon, Vietnam, a complex building of shopping mall and hotel Union of Lublin Square, Warsaw, Poland Piața Unirii (disambiguation), "Union Square" in Romanian
Other Union Square (TV series), an NBC comedy series that aired during the 1997–1998 season Union Square (film), a 2011 film Union Square, a 1988 book by author Meredith Tax "Union Square", a song by Tom Waits from Rain Dogs Union Square & Co., publishing company formerly Sterling Publishing