The San Diego volcanic field is an extensive volcanic field on the El Salvador–Guatemala border of Central America. It consists of a group of basaltic cinder cones and lava flows, with the largest feature being Volcán de San Diego after which the volcanic field is named.

Volcanism in the San Diego volcanic field took place north and east of Lake Güija which is dammed by a large basaltic lava flow from Volcán de San Diego. The volcanic field remains undated but may have been active within the last few thousand years.

The San Diego volcanic field includes the following volcanoes:

Name	Landform	Elevation	Coordinates
Cerro la Chata	Lava cone	746 m (2,448 ft)	14°24′N 89°34′W / 14.400°N 89.567°W / 14.400; -89.567
Laguneta Clara	Pyroclastic cone	480 m (1,570 ft)	14°18′N 89°28′W / 14.300°N 89.467°W / 14.300; -89.467
Loma la Culebra	Pyroclastic cone	572 m (1,877 ft)	14°20′N 89°36′W / 14.333°N 89.600°W / 14.333; -89.600
Loma Iguana	Pyroclastic cone	521 m (1,709 ft)	14°17′N 89°30′W / 14.283°N 89.500°W / 14.283; -89.500
Cerro Junquillo	Pyroclastic cone	640 m (2,100 ft)	14°20′N 89°35′W / 14.333°N 89.583°W / 14.333; -89.583
Cerro Masatepeque	Pyroclastic cone	540 m (1,770 ft)	14°18′N 89°29′W / 14.300°N 89.483°W / 14.300; -89.483
Cerro de Ostúa	Pyroclastic cone	580 m (1,900 ft)	14°19′N 89°35′W / 14.317°N 89.583°W / 14.317; -89.583
Loma los Pajalitos	Pyroclastic cone	500 m (1,600 ft)	14°18′N 89°30′W / 14.300°N 89.500°W / 14.300; -89.500
Cerro Quemado	Pyroclastic cone	460 m (1,510 ft)	14°15′N 89°28′W / 14.250°N 89.467°W / 14.250; -89.467
Cerro el Shiste	Lava cone	780 m (2,560 ft)	14°24′N 89°34′W / 14.400°N 89.567°W / 14.400; -89.567
Cerro el Tule	Cone	468 m (1,535 ft)	14°15′N 89°29′W / 14.250°N 89.483°W / 14.250; -89.483
Cerro la Vega de la Caña	Pyroclastic cone	465 m (1,526 ft)	14°17′N 89°30′W / 14.283°N 89.500°W / 14.283; -89.500

• List of volcanoes in El Salvador
• List of volcanoes in Guatemala