Nikolski Air Station (IATA: IKO, ICAO: PAKO, FAA LID: IKO) is an unattended airport located in Nikolski on Umnak Island in the Aleutians West Census Area of the U.S. state of Alaska.

Current service to Nikolski is provided by Grant Aviation from Unalaska.

[4] The airport was built in 1958 to support Nikolski Air Force Station, a Cold War United States Air Force Distant Early Warning Line radar station on Umnak Island.

The radar station was inactivated in September 1969, ending military use of the airport.

Nikolski Air Station resides at elevation of 77 feet (23 m) above mean sea level.