Alonzo

Meaning: Noble and ready
Origin: Germanic — Variant of Alfonso

Nicknames: Lonnie

Boy's name · #511 in the US (2025) · Timeless

Popularity over time

Few names move less than Alonzo — on the books since 1880, #511 in 2025, and dependable in between. Roughly 46,000 boys have carried the name since. In all that time it has never once missed a year of the national records.

Across the states

See where Alonzo is more common.

Appears in 2020-2025 birth records of 34 states. See the full state-by-state map on this page.

Around the world

See how Alonzo ranks in other countries and regions.

#1,167 in Canada (2025) · #1,271 in France (2025) · #1,705 in England & Wales (2025) · #2,032 in Ecuador (2025) · #1,917 in Austria (2024) · #6,443 in Italy (2023) · #1,115 in Belgium (2020) · #764 in Ireland (2019) · #1,688 in Sweden (2018).

Famous Alonzos

Alonzo Church — American mathematician and computer scientist (1903–1995)
Alonzo Mourning — American basketball player (born 1970)
Alonzo Menifield — American mixed martial arts fighter (born 1987)
Alonzo Cushing — American Union Army officer (1841–1863)
Alonzo Clemons — American sculptor and savant (born 1958)

In stories & tradition

Alonzo Harris — Training Day (film)
Alonzo — Old Possum's Book of Practical Cats (book)
Alonzo Hawk — The Absent-Minded Professor (film)

What Alonzos become

Among 271 notable people named Alonzo:

Military figures appear 2.47× more often than among typical names — e.g. Alonzo Garcelon, 36th Governor of Maine and Union Army surgeon (1813–1906).

Spellings & nicknames

Together with its spelling variant Alonso (#785), Alonzo would rank around #358 with about 910 births last year — the newborns split about 65/35 between Alonzo and Alonso.

About 91 boys a year are given Lonnie as their full name.

Similar names: Alonso · Lewis · Alfred · Vincenzo · Edgar · Alvin

Browse more boy names — popularity, trends and eras for 5,700+ American names, free.

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