Theodosius
given name · Latin script
Meaning: A male given name from Ancient Greek
Recorded as a male name· opposite-gender records fall within measured source noise
/θiowdowsiəs/(machine-generated) pronunciation, model-generated
Theodosius is a given name written in the Latin script, with more bearers in Greece than in any other country.
- GRGreece≈1 in 83Kas Theodosios(inferred from the name graph)
- GYGuyana1 in 375K
- NLNetherlands1 in 480K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Theodosius itself, the figure is that spelling’s, and it is named. One hue, darker where it is more common; hover a country for its figure.
- Greece (inferred from the name graph)
- 2 (measured from records)
- Sources
- 84 (measured from records)
- 1 in 375K (inferred from the name graph)
≈130 named Theodosios, est.
recorded for this name
Highest-authority source
Guyana
measured from records inferred from the name graph
Spellings & scripts(measured from records)
Locally spelled Theodosios in US United States, DE Germany, CY Cyprus and 1 more and Θεοδοσιος in GR Greece.
Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.
Meaning & origin(measured from records)
A male given name from Ancient Greek.
Sources 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested across 10 languages in the etymology graph.
Where in the world(measured from records)
Theodosius counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.
| Country | Most common spelling | Sources | |||
|---|---|---|---|---|---|
| GR Greece | ≈130 est. | ≈1 in 83K | 25 | Θεοδοσιος | 51 |
| US United States | ≈100 est. | ≈1 in 3.3M | 10 | Theodosios | 84 |
| DE Germany | ≈68 est. | ≈1 in 1.2M | — | Theodosios | 31 |
| NG Nigeria | ≈41 est. | ≈1 in 5.3M | listed | Theodosius | 6 |
| ZA South Africa | ≈40 est. | ≈1 in 1.4M | — | Theodosius | 4 |
| NL Netherlands | 36 | 1 in 480K | 36 | — | 3 |
| CY Cyprus | ≈33 est. | ≈1 in 39K | — | Theodosios | 19 |
| BE Belgium | ≈11 est. | ≈1 in 1M | — | Theodosios | 2 |
| GY Guyana | 2 | 1 in 375K | 2 | — | — |
Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.
Registers cited: Διαύγεια — directory of signing officials (organization → signers); SSA — National Baby Names (1880–present); Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018); the wgnd-ng-names register; Guyana — Official List of Electors July 2025. Figures without a register are Mondonomo estimates; see Methodology.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).
Other recorded senses(measured from records)
Theodosius is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In English, the Great Roman emperor
as a namePronouncing Dictionary of Proper Names
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name(measured from records)
- Theodosius of Kyivb. 1029UAUkrainian saint
- Theodosius of Tarnovob. 1300TRBulgarian saint
- Teodósio Ib. 1510PTnot in their usual name5th Duke of Braganza
- Teodósio II, Duke of Braganzab. 1568PTnot in their usual namePortuguese duke
- Teodósio, Prince of Brazilb. 1634PTnot in their usual namePortuguese prince (1634-1653)
- Theodosius Florentinib. 1808CHSwiss Capuchin friar (1808-1865)
- Theodosius Harnackb. 1817RUBaltic German theologian (1817–1889)
- Theodosius of Skopjeb. 1846BGBulgarian religious figure from Macedonia
- Theodosius Dobzhanskyb. 1900USgeneticist and evolutionary biologist (1900-1975)
- Theodosiusb. 1933USAmerican Eastern Orthodox prelate
The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).
How to address them(machine-generated)
A formal English salutation is built on the surname, so it needs a full name — on its own, a first name only supports the informal form.
Evidence(measured from records)
Attested in 12 sources across 8 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018) | — | 36 | #8,193 |
| US United States | SSA — National Baby Names (1880–present) | 2025 | 10 | — |
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (live per-name BRP counts, 1790-2017) | — | 8 | #32,545 |
| GY Guyana | Guyana — Official List of Electors July 2025 | 2025 | 2 | #592 |
| NL Netherlands | Babynamen — Lijst met meer dan 22.000 namen (Amelia King, 2020) | — | — | — |
| NG Nigeria | WGND 2.0 — Nigeria given names | — | — | — |
Reference works 2
- Wikipedia given-name tokens
- Wikidata name items (native-script + romanized given/family names)
These works list the name; their figures are licensed and are not reproduced here.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Theodosius mean, and where does it come from?
- A male given name from Ancient Greek. Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- How do you pronounce Theodosius?
- A machine transcription gives /θiowdowsiəs/ (IPA) for English.
- Is Theodosius a male or female name?
- Theodosius is a male name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
- What are other forms of the name Theodosius?
- In the etymology graph, Teodosio is a form of the same name in other languages.
- In which country does Theodosius have the most bearers?
- Mondonomo estimates about 128 people named Theodosios in Greece, more than in any other country we hold.
- Where is Theodosius most common?
- Measured as a share of residents rather than as a count, Theodosius is densest in Guyana — about 1 in 375 thousand people — even though Greece holds more of our records for it.
- How common is the name Theodosius?
- In the Netherlands, the national register counted 36 people named Theodosius, about 1 in 480 thousand residents.
What do you want to know about Theodosius?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/theodosiusThe payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.
About this data
measured from records inferred from the name graph machine-generated
These figures come from the data snapshot of and will change as it is rebuilt.
Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.
Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.
Cite this page Mondonomo, “Theodosius”. Data snapshot 2026-10-10.