Turnhout (Dutch pronunciation: [ˈtʏr(ə)nɦʌut]) is a Belgian municipality and city located in the Flemish province of Antwerp. The municipality comprises only the city of Turnhout proper. In 2021, its population was 45,874.^[2] The total area is 56.06 km² (21.64 sq mi).^[3] The agglomeration is much more populous, with 81,473 inhabitants.^[4] It is known for its playing card industry, and houses the head office of the world's largest manufacturer of playing cards, Cartamundi. Turnhout is also the capital of the administrative district with the same name. The city council often promotes the city as "the capital of the Kempen area." This designation is entirely unofficial, since the Kempen area is far larger than the Turnhout district and does not form an administrative unit.

Turnhout serves as the economic and cultural center for other communities in the immediate vicinity with more than 40 schools. There is also an important services sector with two hospitals, a two-stage theatre, an eight-screen cinema and one of the largest cultural centres of Belgium.

Turnhout is located at about 51.3 North and 4.9 East, 42 km (26 mi) from the centre of Antwerp, 30 km (19 mi) from Breda and Tilburg, 40 km (25 mi) from Eindhoven. The football club of the city is K.V. Turnhout.