Robert of Anjou, known as Robert the Wise (Italian: Roberto il Saggio, 1277 – 20 January 1343) was King of Naples from 1309 to 1343. He was also Duke of Calabria (1296–1309), titular King of Jerusalem, and Count of Provence and Forcalquier (1309–43).
He was the third but eldest surviving son of King Charles II of Naples the Lame and Maria of Hungary.
During the Sicilian Vespers, Robert was the hostage of Peter III of Aragon. After the death of his elder brother, Charles Martel, he became heir to the crown of Sicily; to obtain it, he married James II of Aragon's daughter Yolanda, in exchange for James's renouncing of Sicily. However, the Sicilian barons refused him and elected James' brother, Frederick III. The war continued, and with the Peace of Caltabellotta (1302) Robert and the Angevin dynasty lost Sicily forever, their rule limited to the south of peninsular Italy.