Stephen of Durazzo (born Stefano di Durazzo, later known as Estêvão de Nápoles in Portugal) (c.1320-1380) was an Italian nobleman and warrior, the claimed youngest son of John, Duke of Durazzo, ruler of the Kingdom of Albania, by his wife Agnés de Périgord and a grandson of king Charles II of Naples.He would therefore be a fifth-generation descendant of the Crusader king of France Saint Louis IX. He moved to Portugal as a crusader, having fought the Moors alongside "his cousin" king Afonso IV of Portugal at the battle of Salado, as mentioned in Duarte Nunes de Leão's Chronicles of the Kings of Portugal. Known in Portugal as Estêvão de Nápoles (Stephen of Naples), he gave origin to the Portuguese family Nápoles,He therefore continued a branch of the Capetingian Dynasty in Portugal, as the Ruling Houses of Burgundy, Avis and Bragança themselves did.
Stephen of Durazzo is known to have married in Portugal, but his wife's name is not known. His only (known) son was Leonardo Estêvão de Nápoles, although an unnamed daughter is sometimes referred.