Theodosius (Latinized name, Latinized from the Greek "Θεοδόσιος", Theodosios, "given by god") is a given name. It may take the form Teodósio, Teodosie, Teodosije etc. Theodosia (given name), Theodosia is a feminine version of the name.

Emperors of ancient Rome and Byzantium

*Theodosius I (347–395; "Theodosius the Great"), son of Count Theodosius *Theodosius II (408–450) *Theodosius III (715–717) *Theodosius (son of Maurice) (583/585–602), eldest son and co-emperor of the Byzantine emperor Maurice

Popes of the Coptic Orthodox Church

*Pope Theodosius I of Alexandria (d. 566) *Pope Theodosius II of Alexandria (d. 742) *Pope Theodosius III of Alexandria (d. 1300)

Patriarchs of Alexandria

*Patriarch Theodosius I of Alexandria (535–567) *Patriarch Theodosius II of Alexandria (12th century)

Other clergy and monastics

In chronological order: *Theodosius, bishop of Philadelphia in Lydia, deposed at the Council of Seleucia, 359 *Theodosius the Cenobiarch (c. 423–529), a monk, abbot, and saint, founder and of the cenobitic way of monastic life *Theodosius, archdeacon and pilgrim to the Holy Land, author of ''De Situ Terrae Sanctae'' ca. 518-530 *Theodosius the Deacon, 10th-century Byzantine poet who wrote the poem "The Conquest of Crete" *Theodosius of Kiev, 11th-century Russian saint *Theodosius, Metropolitan of Moscow (1461–1464) *Theodosius Florentini (1808–1865), Swiss Capuchin friar, a founder of Catholic religious orders *Teodósio de Gouveia (1889-1962), Portuguese cardinal, served as archbishop in Mozambique (1940-1962) *Theodosius (Lazor) (1933–2020), Metropolitan/primate of the Orthodox Church in America (1977-2002) *Theodosios (Hanna) (1965– ), Greek Orthodox Archbishop of Sebastia (2005-)

Dukes of Braganza

*Teodósio I, Duke of Braganza (1510–1563), 5th Duke of Braganza *Teodósio II, Duke of Braganza (1558–1630), 7th Duke of Braganza *Teodósio, Prince of Brazil (1634–1653), 9th Duke of Braganza and 1st Prince of Brazil

Others

In chronological order: *Theodosius of Bithynia or Theodosius of Tripolis (''c.'' 160 BC – ''c.'' 100 BC), Greek astronomer and mathematician *Theodosius, godson of Belisarius (c. 505–565) and Antonina (wife of Belisarius), Antonina * Theodosius (play), ''Theodosius'' (play), 1680 tragedy by Nathaniel Lee

First name

*Theodosius Keene, an 18th-century English architect *Theodosio De Stefani Perez (1853-1935), Italian naturalist and entomologist *Theodosius Dobzhansky (1900–1975), noted geneticist and evolutionary biologist