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What does Castor mean?

Castor Pronunciation of Castor as a boys' name is of Greek origin, and the meaning of Castor is "beaver". In classical myth, along with Pollux, one of the heavenly twins immortalized in the constellation Gemini. They were considerd the patron gods of seafarers, appearing to them in Saint Elmo's fire.

ASSOCIATED WITH Cas-, -or, greek, classical (medieval), constellation (star), saint, fire


VARIANTS Caster, Castorio, Kastor




Castor Hansel (C.H.), ..

How popular is Castor?

Castor is an uncommon given name for males but a very popular surname for all people (#5944 out of 150436, Top 4%). (2000 U.S. CENSUS)

Castor has not been listed in the Top 2000 so far. (2015 BIRTH STATISTICS)

Top 2000 baby names ranking of Castor name in U.S.

Top 100 baby names ranking of Castor outside U.S.

Similar Names

Castor is alike in pronunciation to Coster and Kester. Other suggested similar-sounding names are Alastor, Balfor (see Balfour), Baylor, Cabot, Cadmar, Cadog, Caesar, Caezar, Caio, Cairo, Camdon, Camron, Cannon, Canon, Canyon, Carlos, Carlow, Carlton, Carr, Carston, Carter, Cartier, Casar, Case, Casey, Cash, Casmir, Cason, Caspar, Casper, Cass, Cassio, Cato, Caxton, Cayto, Cesar, Chester, Cheston, Cleto, Colston, Colter, Colton, Connor, Conor, Cosmo, Cranston, Crayton, Easton, Ector, Factor, Gabor, Gaston, Gaynor, Hector, Landor, Major, Mansoor, Mayor, Mazor, Mentor, Nassor, Nestor, Radnor, Ragnor, Raynor, Sandor, Tailor, Talor, Tavor, Taybor, Taylor, Victor and Viktor. These names tend to be more frequently used than Castor.

See names
in meaning and etymology.