Astor is a surname and may refer to:
- Brooke Astor (1902–2007), American philanthropist
- David Astor (1912–2001), British newspaper publisher
- John Jacob Astor, the 4th richest American of all time
- Madeleine Astor (1893–1940), wife of John Jacob Astor IV
- Mary Astor (1906–1987), an Academy Award-winning American actress
- Nancy Astor, Viscountess Astor (1879–1964), first woman to serve as a British Member of Parliament
- Vincent Astor (1891–1958), American businessman and philanthropist
- William Waldorf Astor, 1st Viscount Astor (1848–1919)
Other uses
- The Astor family, a wealthy 19th century American family who became prominent in 20th century British politics. Several places are named after the family and its members:
- Astor, Florida, a town
- Astor Place (Manhattan), a place leading to Broadway in New York City
- Astor Row, the name given to 130th Street between Fifth Avenue and Lenox in Harlem, New York City
- Astoria, Oregon, a city that was a fur-trading outpost founded by the Astors
- Astoria, Queens, a neighborhood of New York City
- Waldorf-Astoria Hotel, a fashionable New York City hotel
- Astor Bennett, a character in the Showtime television series Dexter
- Astor Pictures, a New York-based motion picture releasing company
- The Astor Theatre, a picture theatre located in St Kilda, Victoria, Australia
- Ástor Piazzolla, a tango musician
- Astor Radio Corporation, an Australian consumer electronics manufacturer from 1926 onwards, which also owned the Astor Records label
- MS Astor (1981), a cruise ship that sailed under the name in 1981–1985 for Hadag Cruise Line and Safmarine
- MS Astor, a cruise ship that sailed under the name in 1986–1987 for Marlan Corporation and 1995 onwards for Transocean Tours
- SS Astor, a Panamania cargo ship in service 1955–70
- ASTOR (disambiguation), a military acronym