Riachuelo is a word in the Spanish language, meaning a small river with little current or a brook or an arroyo.

Riachuelo may also refer to:

Places Argentina Riachuelo River or Matanza River, a stream in the Buenos Aires Province Villa Riachuelo, a barrio of Buenos Aires

Brazil Riachuelo, Rio de Janeiro, a neighborhood of Rio de Janeiro, Brazil Riachuelo, Sergipe, a municipality in the Brazilian state of Sergipe Riachuelo, Rio Grande do Norte, a municipality in the state of Rio Grande do Norte

Chile Riachuelo, Chile, a village in Osorno Province, south-central Chile

Battle Battle of the Riachuelo, a naval battle in the Paraguayan War named for Riachuelo stream, Corrientes Province, Argentina

Ships Brazilian battleship Riachuelo, an 1883 Brazilian ironclad battleship Brazilian battleship Riachuelo (1914), a Brazilian battleship cancelled due to World War I Brazilian submarine Riachuelo (S22), a 1975 Oberon-class submarine now a museum ship in Rio de Janeiro Brazilian submarine Riachuelo (S40), a brazilian submarine, leader of Riachuelo Class

Companies Lojas Riachuelo, a Brazilian department store company

Films Riachuelo (film), 1934 film directed by Luis Moglia Barth

Geology

The Riachuelo Formation, an Early to Late Cretaceous geological formation, located near Riachuelo, Sergipe State, Brazil