Casaubon is a surname. Notable people with the surname include:
*
Isaac Casaubon (1559–1614), French classical scholar
*
Méric Casaubon (1599–1671), French-English classical scholar, son of Isaac
*
Marcelo Ebrard Casaubón (born 1959), head of government of the Mexican Federal District
Fictional characters:
*Edward Casaubon, character in ''
Middlemarch'', 1871–72 novel by George Eliot
*Casaubon (no first name given), character in ''
Foucault's Pendulum'', 1988 novel by Umberto Eco
*Casaubon, the name of a character in several of
Mary Gentle's works
{{surname, Casaubon