San Gerónimo Airport (Spanish: Aeródromo de San Gerónimo, (ICAO: SCSG)) is an airstrip serving Algarrobo, a Pacific coastal city in the Valparaíso Region of Chile. The airstrip is 4.6 kilometres (2.9 mi) inland from the coast.

The runway parallels an east–west road atop a low ridge. There are ravines to the north and south of the runway. Another road intersects the runway at a shallow angle, giving the runway the visual appearance of being bent.