Theo

#82 in 2025UnisexBoys' nameGirls' name

Gift of God in the Theodore family; bold people in the Theobald family

Theo has been given to 39,333 babies in the U.S. since 1880. In 2025 it ranked #82 of 13,926 boys’ names in use. Its peak year was 2023, with 4,140 recorded. It's used for both sexes: 91% boys, 9% girls all-time.

Babies named Theo, 2025

1 in 840

Theo over time, 1880–2025

BoysGirls
02K4K6K18801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Girls or boys — Theo over time

Theo switched sides. Across 1900–1909 it was recorded 57% girls; across 2016–2025 it was 1%, crossing 50% around 1883.

18802025

A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used. See every name that switched

Theo: meaning, origin, and history

Gift of God in the Theodore family; bold people in the Theobald family

Short form with Greek and Germanic name routes

About Theo

Theo is a short form with more than one history. Through Theodore it means “gift of God”; through Theobald it belongs to a Germanic name meaning “bold people.” Its compact two-syllable form connects with Vincent van Gogh's brother Theo and footballer Theo Walcott, alongside a strong recent rise in American use.

Theodore and Theobald

Theodore comes from Greek Theodoros, combining theos, “God,” with doron, “gift.” Theo keeps the opening part of that longer name. Theodora belongs to the same Greek family, and Theo can also be used as a familiar form in that wider group.

Theobald follows a different route. Its Germanic elements mean “people” and “bold” or “brave.” The similar opening sound therefore does not give every Theo the same older meaning.

Theodor and Teo are useful related comparisons, while Teddy and Ted are other familiar forms of Theodore. Theo can also stand independently as the complete name recorded at birth.

English usually pronounces it THEE-oh, beginning with the th in “think.” German and Dutch use a t sound, approximately TAY-oh. That difference gives the same four-letter spelling a recognizably different sound across languages.

Theo van Gogh and the letters

Theo van Gogh is remembered through the extraordinary correspondence he shared with his brother Vincent. Most of Vincent's surviving letters were addressed to Theo, whom he regarded as a close friend and dependable supporter.

Theo kept the letters carefully. Vincent was less systematic about preserving replies, sometimes discarding or burning them. The resulting correspondence therefore contains far more letters written by Vincent than sent to him.

The letters also include sketches that helped Theo and other recipients understand works in progress. They preserve artistic questions, practical problems, and personal concerns alongside descriptions of paintings.

Through that relationship, Theo has a place in the history of art that extends beyond being a famous artist's relative. His care for the correspondence helped preserve a remarkably detailed account of Vincent's working life.

Theo Walcott at Arsenal

English footballer Theo Walcott joined Arsenal in January 2006. Although selected for England's World Cup squad that year at seventeen, he did not make his Arsenal debut until the following season.

His time at the club included 397 appearances and 108 goals. He left for Everton in January 2018 after twelve years associated with Arsenal.

Walcott gives Theo a contemporary sporting bearer alongside the nineteenth-century artistic connection. His career also shows the short name used consistently in a public professional setting.

American popularity

Theo was recorded for 101 American boys in 2000 and 221 in 2010. Its male peak came in 2023, with 4,140 births and a ranking of #78. In 2025, 3,945 boys received it, ranking #82.

The spelling also has a smaller female history, including twenty-one girls in 2025. Recent American use has been overwhelmingly masculine, with the strongest growth occurring during the twenty-first century.

Sources & methodologyReferences, data & attribution

Meaning and history draw on the references below. American popularity figures use published Social Security Administration records for this exact spelling; counts below five for a name, sex, and year are omitted. Existing Wiktionary material is available under CC BY-SA. Informal shortening suggestions are identified in the prose.

How popular is Theo?

In 2025, Theo ranked #82 among boys in the United States, with 3,945 recorded uses. The U.S. birth records first list this spelling for boys in 1880; its largest annual count was 4,140 in 2023. Rankings count each spelling separately. They describe national use, so local familiarity can differ. The popularity chart shows whether the name has remained common, returned after a quieter period, or risen recently.

How common is Theo?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 840
3,945 of 3,315,165 births
Among boys only
1 in 433
0.23% of boys
Rank, 2025
#82
of 13,926 boys’ names in use
Coin-flip room size
584 kids
Even odds of a second one

Where Theo sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 202%
Class of 303%
Grade of 10011%
School of 50045%

Put another way: gather 584 children born in 2025 and it's an even bet that one of them is another Theo. In a class of 30 the chance is 3%.

When Theos were born

Half of everyone ever recorded as Theo was born before 2021 — so the typical Theo is around 4 today.

Median birth year
2021
About 4 years old
Biggest decade
2020s
58.0% of all use
Born in the last 25 years
84.4%
A modern name
Recorded since 1950
32,579
People you could plausibly meet
Choose a decade

2020s — 58.0% of all recorded uses (20,784).

Is Theo rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
−2
Places dropped
Rank vs 5 years ago
+90
Places climbed
Rank vs 10 years ago
+324
Places climbed
Births vs 10 years ago
5.16×
More babies than then
Share of its own peak
95.3%
Peak was 2023 (4,140)
Years since peak
2
Years
Year-to-year steadiness
Shifting
19.7% average annual change
Best rank ever
#78
2023

Spellings of Theo

Theo is not the most common spelling — Leo is, with 50.0% against Theo's 6.9%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Theo is used — boys

Across 2016–2025, Theo was most concentrated in Massachusetts — about 1 in 265 boys, against 1 in 579 across all states with data. It was least common in Mississippi (1 in 1,754).

57377 per 100,000

Most concentrated

  1. 1Massachusetts1 in 265
  2. 2Hawaii1 in 271
  3. 3North Dakota1 in 279
  4. 4South Dakota1 in 282
  5. 5Rhode Island1 in 301
  6. 6Maine1 in 310
  7. 7Iowa1 in 324
  8. 8District of Columbia1 in 325

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings.

Geographically, Theo is used remarkably evenly across the country — more concentrated than 17% of the names used widely enough to compare. See the most regional names

Where Theo is used — girls

Across 1910–2025, Theo was most concentrated in South Carolina — about 1 in 33,333 girls, against 1 in 174,194 across all states with data. It was least common in West Virginia (1 in —).

03 per 100,000

Most concentrated

  1. 1South Carolina1 in 33,333
  2. 2Alabama1 in 50,000
  3. 3Maine1 in 50,000
  4. 4Oklahoma1 in 50,000
  5. 5Arkansas1 in 100,000
  6. 6Georgia1 in 100,000
  7. 7Iowa1 in 100,000
  8. 8Idaho1 in 100,000

Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Theo has too little recent state data to map, so this covers all years from 1910.

Theo around the world

Where Theo ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    1996–2025
    #12
    in 2025
  • Scotland
    1990–2025
    #6
    in 2025
  • Northern Ireland
    2001–2025
    #7
    in 2025
  • Ireland
    1988–2025
    #21
    in 2025
  • France
    1901–2025
    #42
    in 2025
  • Norway
    1880–2025
    #22
    in 2025
  • Canada
    1991–2024
    #17
    in 2024
  • South Australia
    1944–2013
    #218
    in 2013
  • New South Wales
    2019–2025
    #32
    in 2025

Popularity data from Office for National Statistics, National Records of Scotland, Northern Ireland Statistics and Research Agency, Central Statistics Office, Institut national de la statistique et des études économiques, Statistics Norway, Statistics Canada, Consumer and Business Services (South Australia) and NSW Registry of Births, Deaths & Marriages. ONS, NRS, NISRA data under Open Government Licence v3.0. CSO, SSB, CBS SA, NSW BDM data under CC BY 4.0. INSEE data under Licence Ouverte / Etalab 2.0. StatCan data under Statistics Canada Open Licence.

Notable people named Theo

People whose public names include Theo, backed by Wikidata given-name records and ordered by linked Wikimedia pages. The name may be a middle name.

People data from Wikidata (CC0). Fame is measured, not judged — the order reflects how widely each person is documented, not the U.S. birth records popularity this page is otherwise about.

Theo in other languages

Cross-language forms and variants of Theo. Linked forms have their own page here.

Variant forms from Wikidata (CC0). Most are used mainly outside the United States; U.S. birth records statistics cover US usage only.

Theo by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025
#82
Trend vs 5 yrs ago
Up 90
Best rank ever
#78
2023
Peak year
2023
4,140 that year
First recorded
1880
Last recorded
2025
All-time count
35,830
Count in 2025
3,945

As a girl's name

Rank in 2025
#5,893
Trend vs 5 yrs ago
Down 2,400
Best rank ever
#522
1887
Peak year
1924
111 that year
First recorded
1880
Last recorded
2025
All-time count
3,503
Count in 2025
21

Names similar to Theo

Matched on shared beginnings and endings, similar length, and comparable popularity.

Names with a curve like Theo

Not spelling — timing. These names rose, peaked and faded in the same years as Theo, so they read as being from the same moment even when they look nothing alike.

Sibling names for Theo

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Theo