Sempang Airport (ICAO: WMKF) is an airport in Kuala Lumpur. It is also known as TUDM Kuala Lumpur, Old Airport or Sempang Air Force Base.
It served as the main airport for Kuala Lumpur from 1952 to 1965 under the name Kuala Lumpur International Airport, until the main airport was moved to Subang International Airport. It was the first airport to serve Kuala Lumpur and currently remains as the only airport to be located within the boundaries of Kuala Lumpur Federal Territory.
Today it is used as the Royal Malaysian Air Force (Malay: Tentera Udara DiRaja Malaysia), Royal Malaysian Police Air Wing and the air unit of Malaysian Fire and Rescue Department base. The Royal Malaysian Air Force Museum is also located at this airport.