Sphinx

Fictional entities

 * Sphinx, name of two Marvel Comics characters


 * Sphinx (Dungeons & Dragons), monster in the Dungeons & Dragons role-playing game
 * S.P.H.I.N.X., an organization in the List of The Venture Bros. characters cartoon
 * Sphinx, a planet in the science fiction Honorverse by David Weber
 * The Sphinx, a mysterious superhero in the 1999 movie Mystery Men