Namesakes
Alfonso XIII
(m) 1886-1941 
Spanish Kings and Queens 1885-1931
Alfonso of Castile
(m) 1221-1284
German Kings and Holy Roman Emperors 1257-1273
Spanish Kings and Queens (Alfonso X the Wise) 1252-1284 Castile
Afonso de Albuquerque
(a.k.a. Alfonso) (m) 1453-1515
Notable Explorers and Adventurers
Alfonso XII
(m) 1857-1885
Spanish Kings and Queens 1874-1885
Alfonso V the Magnanimous
(m) 1396-1458
Spanish Kings and Queens 1416-1458 Aragon
Alfonso VI the Valiant
(m) 1040-1109
Spanish Kings and Queens 1072-1073 Castile
Alfonso VIII the Noble
(m) 1155-1214
Spanish Kings and Queens 1158-1214 Castile
Alfonso Cuarón
(m) 1961-
Notable Filmmakers
Oscar Award Winners 2014; 2019 Gravity; Roma (director)
Alfonso XI the Just
(m) 1311-1350
Spanish Kings and Queens 1312-1350 Castile
Alfonso García Robles
(m) 1911-1991
Nobel Prize Winners 1982 (peace)
Alfonso VII the Emperor
(m) 1105-1157
Spanish Kings and Queens 1126-1157 Castile
Alfonso I the Warrior
(m) c. 1073-1134
Spanish Kings and Queens 1104-1134 Aragon
Alfonso II the Chaste
(m) 1157-1196
Spanish Kings and Queens 1164-1196 Aragon
Alfonso IX
(m) 1171-1230
Spanish Kings and Queens 1188-1230 Leon
Alfonso III
(m) 1265-1291
Spanish Kings and Queens 1285-1291 Aragon
Alfonso IV the Good
(m) 1299-1336
Spanish Kings and Queens 1327-1336 Aragon
Alfonso La Marmora
(m) 1804-1878
Italian Presidents and Prime Ministers 1864-1866 (prime minister)
Bobby Farrell
(a.k.a. Alfonso) (m) 1949-2010
Notable Musicians
Marcelo Díaz
(a.k.a. Alfonso) (m) 1986-
Notable Athletes (soccer)
Robert Alda
(a.k.a. Alfonso) (m) 1914-1986
Notable Actors and Entertainers (actor)
Alfonso Ribeiro
(m) 1971-
Notable Actors and Entertainers (actor)
Alfonso Herrera
(m) 1983-
Notable Actors and Entertainers (actor)
Notable Musicians
Alfonso Menéndez Vallín
(m) 1966-
Olympic Medalists 1992 archery - team (gold)
Alfonso Maria Fusco
(m) 1839-1910
Saints
Al López
(m) 1908-2005
Hall-of-Famers 1977 (baseball)
Alfonso de Baena
(m) ?-1570
Saints
Alfonso Liguori
(m) 1696-1787
Saints
Alfonso Pacheco
(m) ?-1583
Saints