Kastor

Kastor may refer to:
 * Castor and Pollux, twin brothers in Greek and Roman mythology
 * Kastor und Pollux, a complex of two towers in Frankfurt, Germany, named after the mythological characters
 * Kastor of Rhodes, a Greek grammarian and rhetorician
 * Kastor, an unrelated character in the 2002 video game Age of Mythology

Kastor is also the surname of:
 * Adolph Kastor, a founder of Camillus Cutlery Company
 * Deena Kastor (born 1973), an American long-distance runner