Alfonso is a masculine given name. It may also refer to:

Alfonso, Cavite, a municipality in the Philippines Alphonso (mango), a type of mango found in India a title character of Alfonso und Estrella, an opera by Franz Schubert Alphonso, a book by Stéphanie Félicité, comtesse de Genlis

See also Afonso Cláudio, Espírito Santo, a municipality in Brazil Alfonso Castañeda, Nueva Vizcaya, a municipality in the Philippines Alfonso Lista, Ifugao, a municipality in the Philippines Alphonse (given name) Alphonse (surname) Saint-Alphonse (disambiguation) Ildefonso (disambiguation) San Ildefonso (disambiguation)