San Francisco de Campeche () (Ahk'ìin Pech - /aχkʼiːn˥˧ pʰetʃ/ in Yucatec Maya) is the capital city of the Mexican state of Campeche, located at , on the shore of the Bay of Campeche of the Gulf of Mexico. The city's population at the 2005 census was 211,671 people. The municipality for which it serves as the municipal seat had a population of 238,850.