Asau Airport (IATA: AAU, ICAO: NSAU) is a small domestic airfield located in the thick dense jungle at the northwest end of Savai'i in Samoa. The airport is in the village of Asau and mainly services chartered flights. The original airport was constructed in 1969. It was washed away by Cyclone Ofa in 1990, and the current airport was built to replace it in 1999.

After being closed for six years the airport reopened in April 2021.