Santa Ana Formation

Santa Ana Formation may refer to:
 * Santa Ana Formation, Mexico, an Early Miocene geologic formation in Mexico
 * Santa Ana Formation, Antofagasta, an Early Cretaceous geologic formation in Antofagasta, Chile
 * Santa Ana Formation, Tierra del Fuego, a Maastrichtian geologic formation in Tierra del Fuego, Chile
 * Santa Ana limestone, a member of the Cañón de Caballeros Formation in Mexico