Una River

Una River may refer to:


 * Una (Sava), a river in Bosnia and Croatia, tributary to Sava
 * Una River (Pernambuco), in northeastern Brazil
 * Una River (Paraíba), in northeastern Brazil
 * In Bahia, eastern Brazil:
 * Una River (Itaete, Bahia), a tributary of the Paraguaçu River
 * Una River (Una, Bahia), a river that flows past the municipality of Una and empties into the Atlantic Ocean
 * Una River (Valença, Bahia), a river that flows past the municipality of Valença and empties into the Atlantic Ocean
 * Una River (Rio de Janeiro), in southeastern Brazil
 * D'Una River, Santa Caterina, Brazil
 * Una da Aldeia River, São Paulo, Brazil