Cotreumo Airport (Spanish: Aeropuerto Cotreumo, (ICAO: SCBN)) is an airstrip serving the Río Bueno commune in the Los Ríos Region of Chile. The airstrip is 25 kilometres (16 mi) east of Río Bueno city.
An open-ended culvert crosses beneath the runway 185 metres (607 ft) from the south end, and may be a hazard for aircraft departing the centerline. The runway is 24 metres (79 ft) wide at that point.