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Alonzo

♂ Boy

Pronounced ah-LON-zoh /əˈlɒnzoʊ/High

Meaning: Spanish form of Alfonso, from the Visigothic name Alfons composed of adal (noble) + funs (ready, eager), meaning 'noble and ready for battle'; Alonzo is the informal contracted Spanish variantHigh

In 30 seconds: Alonzo is a warm, melodic Spanish variant of Alfonso meaning 'noble and ready.' Rich with heritage and an easy three-syllable flow, it has long been beloved in Latino communities and beyond.
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Origin HighSpanish, Germanic
MeaningSpanish form of Alfonso, from the Visigothic name Alfons composed of adal (noble) + funs (ready, eager), meaning 'noble and ready for battle'; Alonzo is the informal contracted Spanish variant
U.S. rank (2025)#511 ↗ Rising
2025 U.S. births590 boys (0.03% of U.S. boys)
Peak year2022
Total births (all-time)≈ 45,950

Popularity in the U.S. · SSA data

peak 202218802025

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

History & Origin

Alonzo derives from the Spanish Alfonso, which traces back to the Visigothic name Alfuns or Adalfuns, combining adal (noble) and funs (ready, eager). The Visigoths brought Germanic naming traditions to Spain, and the royal dynasties of León and Castile made Alfonso one of the great names of Iberian history.

Alonzo is the contracted, more vernacular Spanish form of Alfonso, without the medial 'f.' It has been used in Spanish-speaking communities for centuries and entered broader American use through Hispanic immigration. It enjoyed a moment of mainstream American visibility through NBA star Alonzo Mourning.

Did you know? Alfonso/Alonzo was the name of eleven kings of León and Castile in the medieval period, making it one of the most royal names in Iberian history — a dynasty-defining name for seven centuries.
Overall data confidence 88%
Behind the Name — Alonzo — etymologyU.S. Social Security Administration — popularity data

Variations

AlfonsoAlphonsoAlfonzo

Nicknames

AlLonLonzo

Famous Bearers

  • ★Alonzo Mourning (1970–present)
    American NBA basketball player and two-time Olympic gold medalist.

If you like Alonzo…

Alfonso— the formal Spanish version of the same Germanic-origin name
Rodrigo— Spanish royal name of equal stature and the same Latin European heritage
Ernesto— melodic three-syllable Spanish name with the same warm classic appeal
Lorenzo— Spanish/Italian three-syllable classic with similar rhythm and heritage

Frequently Asked

What does the name Alonzo mean?

Alonzo is a Spanish variant of Alfonso, from Visigothic Adal-funs meaning 'noble and ready' — a name borne by eleven Spanish kings.

How do you pronounce Alonzo?

It is said ah-LON-zoh — three syllables, stress on the second.

Is Alonzo a boy or girl name?

Alonzo is used exclusively as a boys' name.

How popular is Alonzo?

Alonzo has been a consistent presence in U.S. Hispanic communities and typically ranks in the top 500–700 boys' names nationally.