Castor most commonly refers to: * Castor (star), a star in the Gemini constellation *Castor, one of the Dioscuri/Gemini twins Castor and Pollux in Greco-Roman mythology Castor or CASTOR may also refer to:

Science and technology

* Castor (rocket stage), a family of solid-fuel rocket stages * Castor (software), data binding framework for Java * ''CASTOR'' (nuclear waste), cask for storage and transport of radioactive material * ''CASTOR'' experiment, "Centauro and Strange Object Research" at CERN * CASTOR (spacecraft), proposed space telescope * Castor sugar, fine sugar * Caster (or Castor), an undriven wheel * Caster (or Castor) angle, relevant to a steered wheel

Biology

* Castor oil plant, plant from which castor bean grows ** Castor oil, oil of the castor bean ** Castor wax, produced from castor oil *''Castor'', a genus name of the beaver **

Castoreum Castoreum is a yellowish exudate from the castor sacs of mature beavers used in combination with urine to territorial marking, scent mark their territory. Both beaver sexes have a pair of castor sacs and a pair of anal glands, located in two c ...

, natural scent derived from the beaver

People

Given name

Ancient

* Castor of Rhodes, Greek grammarian and rhetorician * Drusus the Younger (13 BC – 23 CE), Roman consul, son of the Emperor Tiberius, nicknamed "Castor" * Antonius Castor, ancient botanist *Saint Castor, the name of several Christian saints ** Castor of Apt (died c. 420), French bishop of Apt ** Castor of Karden (died c. 400), German priest and hermit

Modern

* Castor Cantero (1918–?), Paraguayan football player * Castor McCord (1907–1963), American jazz saxophonist * Castor (footballer) (born 1979), Edmilson Ferreira, Brazilian footballer

Surname

* Betty Castor (born 1941), American educator and politician * Brian Castor (1889–1979), English cricketer * Bruce Castor (born 1961), American lawyer and politician * George A. Castor (1855–1906), American politician * Helen Castor (born 1968), English historian * Jean-Victor Castor (born 1962), French politician * Jimmy Castor (1940–2012), American musician * Kathy Castor (born 1966), American politician * Stacey Castor (1968–2016), American murderer * Steve Castor (born 1972/1973), American lawyer

Fiction

* Castor Oyl, fictional character in the ''Popeye'' cartoons *''Castor Troy'', fictional character in the 1997 movie '' Face/Off'', portrayed by Nicolas Cage and John Travolta *''Castor'', fictional character in the video game '' Spartan: Total Warrior'' *''Lord Castor'', fictional character in the 2007 movie '' The Harpy'' *''Castor'', fictional character in '' Tron: Legacy'', portrayed by Michael Sheen *"Castor, Gobernador" fictional character in '' The Courts of the Morning'' by John Buchan *"Castor Wilds" fictional location in '' The Legend of Zelda: The Minish Cap'' by Nintendo *"Castor", fictional persona in the video game ''

Persona 3 is a 2006 role-playing video game developed by Atlus that is the fourth main installment in the ''Persona (series), Persona'' series, which is part of the larger ''Megami Tensei'' franchise. It was originally released for the PlayStation 2 in ...

.'' Castor is used by one of the playable characters, Shinjiro Aragaki

Places

* Castor, Alberta, Canada * Queue de Castor River, Eeyou Istchee Baie-James, Jamésie, Nord-du-Québec, Canada * Rivière aux Castors Noirs, river in Quebec, Canada * Castor River (Ontario), Ontario, Canada * Castor, Louisiana, Louisiana, United States * Castor Creek (Little River tributary), Louisiana, United States * Castor River (Missouri), United-States * Castor (mountain), in the Pennine Alps on the border between Switzerland and Italy * Castor Bay, Auckland, New Zealand * Castor, Cambridgeshire, England * Castor Temple, a summit in the Grand Canyon, United States *Castor, an old name for Caistor St. Edmund, Norfolk, England * Castor (crater) on Saturn's small moon Janus

Other uses

* Castor (band), American rock band * Castor (cloth), a woollen fabric * Castor (trucks), a brand used by Swedish truck manufacturers Tidaholm in the 1910s * Castor Cracking Group, Swedish music group * , the name of more than one ship of the British Royal Navy * ''Castor'' (1782 ship), a vessel launched in 1782 that made one voyage to Bengal for the British East India Company and that was last listed in 1808. * P901 Castor Belgian patrol ship ''Castor'' * Castor gloves, gloves made from the skin of lambs or deer * Castor hat * Project Castor, a set of male clones in the TV series '' Orphan Black'' * Castore (brand), British sportswear and athletic clothing company * ''Castor'' (1917 ship), 1917 Polish tugboat