Given name
Theodosius
“God”·“gift”·“gift of God”
Theodosius is a variant of Theodore. Theodore combines “God” and “gift,” giving the meaning “gift of God.”
Meaning & origin
What it means
Theodosius is a variant of Theodore. Theodore combines “God” and “gift,” giving the meaning “gift of God.”
Explained through its name family
Where it comes from
Theodosius is a variant of Theodore. Theodore reached English through French from the Greek name Theodoros.
Explained through its name family
How it developed
In Latin usage, Theodosius developed from Θεοδόσιος. Theodosius is a variant of Theodore. The shared background comes through Theodore: Theodore’s Greek elements are theos, meaning “god,” and doron, meaning “gift.” French forms provided the route into English.
Combines direct and name-family evidence
The story
Published U.S. birth records include this spelling as early as 2025. This is the earliest published observation available here, rather than a date for the name’s origin. Theodosius is a variant of Theodore. The history of Theodore gives this family its wider story. Theodore was popular among early Christians and was borne by several saints. That religious history helps explain the name’s spread into different European forms.
Combines direct and name-family evidence
Theodosius through the years
- Babies since 1880
- 10
- 10 boys · 0 girls
- Most popular year
- 2025
- 10 babies
- 2025
- 10
- #8,186 for boys
- 2021–25 vs 2016–20
- —
- Too few births to compare
By the numbers
In 2025, this name appeared in 10 U.S. birth records for boys, ranking No. 8,186 among boys’ names. The recent annual counts are too incomplete to establish a ten-year comparison.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Theodosius’s family of names
In Latin usage, Theodosius has a feminine form in Theodosia. Theodosius has a related form in Theodore. In English usage, Theodosius has a conventional equivalent in the Italian form Teodosio.
Inner ring: nicknames and forms · outer: across languages.
Around the world
Theodosius has relatives in 13 languages.
11 related names in 13 languages. Point at a dot, or tab to the map and use the arrow keys.
Nicknames & forms 1
Diminutives, pet forms, short forms and variants used alongside the name.
Across languages 17
Equivalents and cognates in other languages, plus older forms it grew from.
People named Theodosius
- Theodosius Dobzhanskygeneticist and evolutionary biologist (1900-1975)
- Theodosius of KievUkrainian saint1029–1074
- Teodósio II, Duke of BraganzaPortuguese duke1568–1630
- Teodósio I, Duke of Braganza5th Duke of Braganza1510–1563
- Theodosius III of AbkhaziaKing of Abkhazia901–980
- Teodósio, Prince of BrazilPortuguese prince (1634-1653)
- Theodosius of TarnovoBulgarian saint1300–1363
- Theodosius HarnackBaltic German theologian (1817–1889)
- Pope Theodoros I of Alexandriapope of the Coptic Orthodox Church650–742
Listed by how widely each person is written about, which says nothing about the name itself.
Similar names
If you love Theodosius, these share its style, era, origin or sound, from outside its own family.