Miomancalla
Image:Photograph and line drawing of the skull of Miomancalla howardi compared with the skull of Pinguinus impennis.jpg|thumb|left|Skull of M. howardi compared with the skull of the great auk
Miomancalla is an extinct genus of prehistoric flightless alcids that lived on the Pacific coast of today's California in the Miocene epoch. It contained two species, M. howardi and M. wetmorei.