Hang Nadim International Airport (Indonesian: Bandar Udara Internasional Hang Nadim) (IATA: BTH, ICAO: WIDD) is an international airport located in Batam, Riau Islands, Indonesia. It is named after Laksamana Hang Nadim Pahlawan Kechik, a legendary warrior from the region. The airport is the primary method of transport to and from Batam, alongside ferries to neighboring islands, including the sovereign city-state Singapore in the north.

The airport has the largest runway in Indonesia and the second-longest runway in Southeast Asia. This stems from its original development to handle diversions of aircraft from Singapore Changi Airport located approximately 30 kilometres (19 miles) away in the case of emergencies or inclement weather, and as such has sufficient facilities for wide-body aircraft including the Boeing 747s, Boeing 777s and Airbus A380s. The airport stretches over a land area of about 1,800 hectares (4,400 acres), of which only 40% is normally used.

By the end of May 2014, it was the sixth airport in Indonesia to operate 24 hours a day. The move was the result of many airlines making the airport a hub for their operations. Lion Air has developed a base at the airport as Soekarno–Hatta International Airport is severely congested. The airport also has an aircraft maintenance facility which is gradually transforming into a hub for aircraft maintenance.

In March 2021, a PPP for the expansion of the airport was awarded to a consortium of Angkasa Pura I, Incheon International Airport Corporation and state-owned construction company PT Wijaya Karya. The 25 year concession includes the improvement of passenger and cargo terminal facilities.