Castex (surname)

Castex is a Gascon surname meaning "castle". Notable people with the surname include:


 * Alphonse Castex (1899–1969), French Olympic athlete
 * Françoise Castex, French Socialist MP
 * Jean Castex (born 1965), French politician, Prime Minister of France from 2020 to 2022
 * Jean-Jacques Castex (1731–1822), French sculptor
 * Louis Castex (1868–1954), French sculptor
 * Louis Castex (1896–1968), French aviation pioneer
 * Michel Castex (born 1943), French journalist
 * Pierre Castex (1924–1991), French scriptwriter
 * Pierre-Georges Castex (1915–1995), literary critic
 * Raoul Castex, French Navy Vice Admiral (1878–1968), theorist of naval warfare