Forster may refer to:
- Forster, New South Wales, a town in Australia
- Forster (surname), several people with the surname
- Forster Music Publisher, Inc., a sheet music publisher founded in 1916 based in Chicago
- Forster's Tern, a seabird of the tern family Sternidae
- Forster-Decker method, a series of chemical reactions that transform a primary amine ultimately to a secondary amine
- Forster Square, Bradford, a central square in Bradford, United Kingdom
- Bradford Forster Square railway station, a railway station near Forster Square
- USS Forster (DE-334), a ship launched in 1943 that served as an escort in the Atlantic and Mediterranean during World War II