Alonso is a variant form of the English, Italian, and Spanish Alfonso.
Alonso is also a variant form of the Italian, Spanish, and English Alonzo in the English, Italian, and Spanish languages.
Alonso is somewhat popular as a baby name for boys. The name has been rising in popularity since the 1980s. At the modest peak of its usage in 2010, 0.018% of baby boys were given the name Alonso. Its ranking then was #637. In 2018, it ranked at #775 with a usage of 0.015%, and it was the 2nd most popular after Alonzo, out of all boy names in its group. The name was twice as popular as Alonso in 2018.
† Pronunciation for Alonso: AA as in "odd (AA.D)" ; L as in "lay (L.EY)" ; N as in "knee (N.IY)" ; Z as in "zoo (Z.UW)" ; OW as in "oak (OW.K)"