Zlín (in 1949–1989 Gottwaldov; Czech pronunciation: [zliːn]; German: Zlin) is a city in the Czech Republic. It has about 75,000 inhabitants. It is the seat of the Zlín Region and it lies on the Dřevnice River. It is known as an industrial centre. The development of the modern city is closely connected to the Bata Shoes company and its social scheme, developed after World War I. A large part of Zlín is urbanistically and architecturally valuable and is protected as an urban monument zone.

Zlín consists of 16 municipal parts (in brackets population according to the 2021 census):

Prštné, Louky, Mladcová, Příluky, Jaroslavice, Kudlov and Malenovice are urbanistically fused with Zlín. They are sometimes called Zlín II–VIII, which was part of their name at the time when they were administratively merged with Zlín.

There are several legends about the origin of the name of the city, according to which it was derived from slín (i.e. "marl") or zlaté jablko (i.e. "golden apple"). However, the name Zlín was most likely derived from the old personal Slavic name Zla, Zlen or Zleš.

From 1949 to 1989, the city was renamed Gottwaldov after the first communist president of Czechoslovakia Klement Gottwald. On 1 January 1990, the city's name was changed back to Zlín.

Zlín is located about 70 kilometres (43 mi) east of Brno. It forms an urban area together with the town of Otrokovice. The territory of the city lies in the Vizovice Highlands. The highest point is the hill Tlustá hora at 458 m (1,503 ft) above sea level. The Dřevnice River flows through the city. The Fryšták Reservoir is situated in the northern part of the municipal territory.

Zlín's climate is classified as humid continental climate (Köppen: Dfb; Trewartha: Dobk). Among them, the annual average temperature is 9.5 °C (49.1 °F), the hottest month in July is 20.2 °C (68.4 °F), and the coldest month is 0.2 °C (32.4 °F) in January. The annual precipitation is 672.3 millimetres (26.47 in), of which July is the wettest with 84.7 millimetres (3.33 in), while January is the driest with only 32.8 millimetres (1.29 in). The extreme temperature throughout the year ranged from −28.0 °C (−18.4 °F) on 9 February 1956 to 36.5 °C (97.7 °F) on 8 July 1957.

The first written mention of Zlín is from 1322, when it was acquired by Queen Elizabeth Richeza. In that time, Zlín was already a market town and served as a craft guild centre for the surrounding area of Moravian Wallachia. From 1358, the Zlín estate was owned by Bishop Albrecht of Šternberk and soon became the seat of the Moravian branch of the Šternberk family. In 1397, the town privileges of Zlín were extended and Zlín became a town. This significantly helped the economic development of Zlín.