Paraná (päränäˈ) [key], city (1991 pop. 211,966), capital of Entre Ríos prov., NE Argentina, a port on the Paraná River. It is the center of a grain and cattle district; there is an agricultural school nearby. Founded in 1730, Paraná was the capital of the Argentine confederation from 1853 to 1862. Points of interest include a cathedral and a provincial museum.