Afonso of Portugal is the name of several members of the Portuguese Royal Family, including six Monarchs:

Kings

• Afonso I Henriques (1109–1185), first King of Portugal
• Afonso II (1185–1223), third King of Portugal
• Afonso III (1210–1279), fifth King of Portugal
• Afonso IV (1291–1357), seventh King of Portugal
• Afonvo V (1432–1481), twelfth King of Portugal
• Afonso VI (1643–1683), twentieth or twenty-first (according to some historians) King of Portugal

Princes and infantes

• Infante Afonso, Lord of Portalegre (1263–1312), son of Afonso III of Portugal
• Infante Afonso (1315–1315), son of Afonso IV
• Infante Afonso (?–?; 14th century), son of Peter I of Portugal
• Infante Afonso (1371 or 1382–1371 or 1382), son of Ferdinand I of Portugal
• Afonso, Duke of Braganza (1377–1461), natural son of John I of Portugal;
• Infante Afonso (1390–1390), son of John I of Portugal
• Afonso, Prince of Portugal (1475–1491), son of John II of Portugal
• Cardinal-Infante Afonso (1509–1540), son of Manuel I of Portugal
• Afonso, Prince of Portugal (1526–1526), son of John III of Portugal
• Infante Afonso, Duke of Porto (1865–1920), son of Luís I of Portugal

pt:Afonso de Portugal