Given name & surname
Alonzo
“prepared for battle; eager and ready”
In English use, Alonzo has a related form in Alfonso. One Italian interpretation is “prepared for battle; eager and ready.”
Original SpanishAlonso
Meaning & origin
What it means
In Spanish use, Alonzo carries the interpretation “prepared for battle; eager and ready.” In English use, Alonzo has a related form in Alfonso. One Italian interpretation is “prepared for battle; eager and ready.”
Combines direct and name-family evidence
Where it comes from
An origin associated with this spelling is Spanish.
How it developed
Alonzo is used as a form of Alfonso.
The story
Published U.S. birth records include this spelling as early as 1880. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Alonzo through the years
- Babies since 1880
- 46,109
- 45,955 boys · 154 girls
- Most popular year
- 2022
- 651 babies
- 2025
- 590
- #511 for boys
- 2021–25 vs 2016–20
- +1%
- Steady
Where it’s given
By the numbers
In 2025, this name appeared in 590 U.S. birth records for boys, ranking No. 511 among boys’ names. Average annual use for boys was 1.3% higher in 2021–2025 than in 2016–2020. In 2025, California had the largest reported state-level birth count for boys with this name (149). Published U.S. population figures for this spelling include 24,457 as a first name in 2020; 21,256 as a surname in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Alonzo’s family of names
In English usage, Alonzo has an affectionate form in Lonnie. Alonzo has a feminine form in Alanza. In English usage, Alonzo has a related form in Alfonso.
Inner ring: spellings · middle: nicknames and forms · outer: across languages.
Around the world
Alonzo has relatives in 9 languages. Lines run from its Spanish roots to each of them.
Nicknames & forms 11
Diminutives, pet forms, short forms and variants used alongside the name.
- Alonsovariant · Spanish
- Alfonsovariant · English, Spanish
- Lonniepet form · English
- Alanzovariant · Italian
- Allonzovariant · Italian
- Alansovariant
- Alohnzovariant · Italian
- Alohnsovariant
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Spellings & scripts 1
The same name written differently, including transliterations into other scripts.
Across languages 9
Equivalents and cognates in other languages, plus older forms it grew from.
- AlphonseFrench
- AlphonsoItalian
- AlphonsusLatin
- Lonequivalent
- AfonsoPortuguese
- AlphonzoEnglish
- AlfonsGerman
- Alanzafeminine form
Show 1 moreShow fewer
People named Alonzo
- Alonzo ChurchAmerican mathematician and logician (1903–1995)
- Alonzo MourningAmerican basketball player (born 1970)
- Alonzo BabersAmerican athletics competitorborn 1961
- Alonzo RussellBahamian sprinterborn 1992
- Gorilla ZoeAmerican rapperborn 1983
- Alonzo GeeAmerican basketball player (born 1987)
- Alonzo ChappelAmerican painter (1828-1887)
- Alonzo BradleyAmerican basketball player (born 1953)
- Alonzo J. EdgertonPolitician, Judge (1827–1896)
Listed by how widely each person is written about, which says nothing about the name itself.
Appears in
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