El Pilar is an ancient Maya city center located on the Belize-Guatemala border. The site is located 12 kilometres (7.5 mi) north of San Ignacio, Belize and can be accessed through the San Ignacio and Bullet Tree Falls on the Belize River. The name "El Pilar" is Spanish for "watering basin", reflecting the abundance of streams around the site and below its escarpment, which is rare in the Maya area.

Maya cities were the centres of population of the pre-Columbian Maya civilization of Mesoamerica. They served the specialised roles of administration, commerce, manufacturing and religion that characterised ancient cities worldwide. Maya cities tended to be more dispersed than cities in other societies, even within Mesoamerica, as a result of adaptation to a lowland tropical environment that allowed food production amidst areas dedicated to other activities. They lacked the grid plans of the highland cities of central Mexico, such as Teotihuacán and Tenochtitlan. Maya kings ruled their kingdoms from palaces that were situated within the centre of their cities. Cities tended to be located in places that controlled trade routes or that could supply essential products. This allowed the elites that controlled trade to increase their wealth and status. Such cities were able to construct temples for public ceremonies, thus attracting further inhabitants to the city. Those cities that had favourable conditions for food production, combined with access to trade routes, were likely to develop into the capital cities of early Maya states.