Alphonso or Alfonso is a masculine given name and occasional nickname which may refer to:
Aristocrats
Iberia
Elsewhere
- Alfonso I d'Este (1476–1534), Duke of Ferrara
- Alfonso II d'Este (1533–1597), Duke of Ferrara
- Alfonso II, Count of Provence (1180–1209), second son of Alfonso II of Aragon
- Alfonso III d'Este (1591–1644), Duke of Modena and Reggio
- Alfonso of Capua (c. 1120–1144), Prince of Capua
- Prince Alfonso, Count of Caserta (1841–1934), Duke of Calabria and head of the royal house of the Two Sicilies
- Prince Alfonso of Hohenlohe-Langenburg (1924–2003), Spanish playboy and businessman
- Alfonso Jordan (1103–1148), Count of Tripoli, Count of Rouergue, Count of Toulouse, Margrave of Provence and Duke of Narbonne
- Infante Alfonso, Duke of Calabria (1901–1964), claimant to the title of the head of House of Bourbon Two Sicilies
- Alphonso, Earl of Chester (1273–1284), first son of Edward I of England, heir apparent to the English throne
Others
- Alfonso of Valladolid (c. 1270–c. 1347), Jewish convert to Christianity, philosopher, and mathematician
- Alphonso Calhoun Avery (1835–1913), American lawyer, Confederate military officer and politician
- Alphonso Boone (1796–1850), American pioneer in what is now Oregon
- Alfonso Calderon (activist) (born 2001), Spanish-born American gun control activist
- Alfonso Calderón (poet) (1930–2009), Chilean poet and writer
- Al Campbell (born 1954), Jamaican reggae singer
- Alphonso Carreker (born 1962), American former National Football League player
- Alfonso Cuarón (born 1961), Mexican cinematographer
- Alphonso D'Abruzzo, birth name of Robert Alda (1914–1986), American actor
- Alphonso D'Abruzzo, birth name of Alan Alda (born 1936), American actor, son of Robert Alda
- Alphonso Davies (born 2000), Ghanaian-born Canadian soccer player
- Mike Espy (born 1953), American lawyer and politician
- Alphonso Ford (1971–2004), American basketball player
- Alphonso Gerard (1916–2002), American Negro league baseball player
- Alphonso Jackson (born 1945), American politician, United States Secretary of Housing and Urban Development
- Alphonso Johnson (born 1951), American jazz bassist
- Buck Johnson (born 1964), American former basketball player
- Alfonso Lizarazo (born 1940), Colombian host and politician
- Alphonso Lingis (1933–2025), American philosopher, writer and translator
- Alphonso Lisk-Carew (1883–1969), Sierra Leonean photographer
- Alphonso M. Lunt (1837–1917), Union Army sergeant awarded the Medal of Honor
- Alphonso McAuley, 21st century American actor
- Alfonso Mejia-Arias (born 1961), Mexican musician, writer, social activist and politician
- Alfonso Oiterong, Palauan politician, vice president
- Alfonso Pérez (born 1972), Spanish former footballer
- Alfonso Pérez (boxer) (born 1949), Colombian former boxer
- Alfonso Ribeiro (born 1971), American actor and game show host
- Alphonso Theodore Roberts (1937–1996), Vincentian political activist and cricketer
- Alfonso John Romero (born 1967), American video game designer
- Alphonso Sgroia (1886–1940), New York City gangster and murderer
- Alphonso Smith (born 1985), American former National Football League player
- Alphonso C. Smith (1894–1945), Canadian politician
- C. Alphonso Smith (1864–1924), American English professor, college dean, philologist and folklorist
- Alfonso Soriano (born 1976), American Major League Baseball player
- Alphonso Sumner, African American newspaper publisher and abolitionist who opened Nashville, Tennessee's first Black school in 1833
- Alphonso Taft (1810–1891), American jurist, diplomat, and politician, United States Attorney General and Secretary of War under President Ulysses S. Grant, father of President William Howard Taft
- Alphonso Wilson (1860–1936), African-American activist
- Alphonso Wood (1810–1881), American botanist and theology instructor
Nickname
Fictional characters
See also
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