Randers is a city in Randers Municipality, Central Denmark Region on the Jutland peninsula. It is Denmark's sixth-largest city, with a population of 62,623 (as of 1 January 2021). Randers is the municipality's main town and the site of its municipal council. By road it is 38.5 kilometres (23.9 mi) north of Aarhus, 43.8 kilometres (27.2 mi) east of Viborg, and 224 kilometres (139 mi) northwest of Copenhagen.

Randers became a thriving market town in medieval times, and many of its 15th-century half-timbered houses remain today, as does St Martin's Church, also from that period. Trade by sea was facilitated through the Gudenå River, entering Randers Fjord. During industrialization, Randers quickly became one of the most important industrial towns in the country, but it saw itself outpaced by the cities of Aarhus and Aalborg at the beginning of the 20th century. Most of the larger historic industries in Randers are gone today. From 1970, the population saw a decline from a peak of 58.500 citizens, until a stabilization in the 1990s occurred, followed by a modest rise since then.

The main tourist attraction is Randers Tropical Zoo thanks to its artificial rainforest, the largest in Northern Europe, its 350 varieties of plant and over 175 species of animals. The city's football team, Randers FC, play their homes games at the AutoC Park Randers, and are in Denmark's first league, the Superligaen. The town is also home to Randers rugby union club and Jutland RLFC, a rugby league team, as well as Randers Cimbria, a Basketligaen team that took 2nd place in the 2013-2014 season.

The oldest forms of the town's name appear on coins minted from the times of Canute the Holy (1080-86) until those of Svend Grathe (1146-57). The coins bear the names Ranrosia, Ransias, Radrusia, Rand and Randrusia. Ancient written records include the Latin Randrusium (Saxo Grammaticus, c. 1200), Icelandic Randrosi (Snorri Sturluson's Heimskringla, 1230), and Rondrus, Randrøs (Valdemar's Census Book, 1231). Other early forms provide Randersborg and Randershusen. The name appears to stem from Rand (hillside) and Aros (river mouth) and probably means "town on the hillside by the river mouth". The modern form Randers first came into use at the end of the 17th century.