Waingapu is the largest town on the island of Sumba, East Nusa Tenggara, Indonesia. It is the capital town of the Regency of Sumba Timur. Sumba Timur's Waingapu Airport 'Umbu Mehang Kunda' (IATA: WGP - ICAO: WRRW) is located in Waingapu, and the town is served by ferries from nearby islands. The sub-district town has a population of about 52,755 inhabitants.