Surname
- Anne-Marie Alonzo (1951-2005), Canadian playwright, poet, novelist, critic and publisher
- Jérôme Alonzo (born 1972), French football (soccer) player
- John A. Alonzo (1934–2001), a U.S. cinematographer
- Mariano Roque Alonzo (died 1853), President of Provisional Junta of Paraguay from 9 February 1841 to 14 March 1841
- Pierre Alonzo (footballer) (born 1940), former French football player
Read more about this topic: Alonzo