The Petén Basin is a geographical subregion of the Maya Lowlands, primarily located in northern Guatemala within the Department of El Petén, and into the state of Campeche in southeastern Mexico.

Guatemala, officially the Republic of Guatemala, is a country in Central America. It is bordered to the north and west by Mexico, to the northeast by Belize, to the east by Honduras, and to the southeast by El Salvador. It is hydrologically bordered to the south by the Pacific Ocean and to the northeast by the Gulf of Honduras.