NameCensus.

UK boy's name

Theodor

A masculine name of Greek origin meaning "gift of God".

For 2026, the newest official UK baby-name figures on this page are from 2024. That release is the current official benchmark rather than a forecast.

Theodor is a boy's name in the UK records. People looking for Theodor popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #622, with 61 babies registered with the name. Its strongest year in the published records was 2021, with 76 births.

This profile covers 737 England and Wales registrations across 29 recorded years from 1996 to 2024. The figures come from ONS England and Wales, NRS Scotland and NISRA Northern Ireland, so the page is a view of published baby-name registrations rather than a forecast or a live count of people using the name today.

The latest count is about 80% of the recorded peak, which gives a quick read on how the name has moved since its high point.

We estimate that about 750 living people in the UK are called Theodor. This uses published birth registrations from England and Wales, Scotland and Northern Ireland, then applies ONS national life tables to estimate how many are likely still alive. It does not forecast extra births for 2025 or 2026.

Key insights

  • Theodor ranked #622 for boys in England and Wales in 2024, with 61 registrations.
  • The name peaked in 2021, when 76 boys were registered as Theodor.
  • Theodor ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #415 in 2015.
  • About 750 living people in the UK are estimated to have Theodor as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#622

2024

Births in 2024

61

Latest year

Peak year

2021

76 births

Estimated living

750

2026

Meaning

What does Theodor mean?

The name Theodor has its origins in the ancient Greek language, derived from the words "theos" meaning "god" and "doron" meaning "gift." It translates to "gift of God" or "divine gift." This name has a rich historical lineage, spanning across various cultures and time periods.

The earliest recorded instances of the name can be traced back to the Byzantine Empire, where it was commonly used among Greek-speaking Christians. It gained popularity as a masculine name due to its religious connotations and association with piety and virtue.

In the Middle Ages, the name Theodor was widely adopted across Europe, particularly in Germanic and Slavic regions. Variations such as Theodor, Theodoros, Theodorus, and Theodor emerged, reflecting the linguistic adaptations of different cultures.

Notable historical figures who bore the name Theodor include Theodor of Tarsus (602-690), an Archbishop of Canterbury and a leading figure in the English church during the 7th century. Theodor Studites (759-826) was a Byzantine Greek monk, theologian, and reformer, known for his influential role in the revival of monasticism in the Eastern Orthodox Church.

During the Renaissance period, Theodor Zwinger (1533-1588) was a Swiss scholar and physician who made significant contributions to the fields of medicine and botany. Theodor de Bry (1528-1598), a Flemish engraver and publisher, is renowned for his detailed illustrations and documentation of the early European exploration of the Americas.

In the realm of literature, Theodor Fontane (1819-1898) was a German novelist and poet, celebrated for his works that captured the social and cultural landscapes of 19th-century Prussia. Theodor Seuss Geisel (1904-1991), better known as Dr. Seuss, was an American children's author and illustrator, whose whimsical and imaginative books have delighted generations of readers worldwide.

Other notable individuals with the name Theodor include Theodor Mommsen (1817-1903), a German historian and writer who won the Nobel Prize in Literature for his work on Roman history, and Theodor Herzl (1860-1904), an Austro-Hungarian journalist and political activist, widely recognized as the founder of modern political Zionism.

The name Theodor has transcended cultural boundaries and historical eras, carrying with it a rich tapestry of religious, literary, and intellectual significance. Its enduring popularity serves as a testament to the universal appeal of names that evoke divine blessings and spiritual connotations.

Sourced from namecensus.com.

Popularity

Theodor over time

The chart below shows babies named Theodor registered in England and Wales in the years where the name appears in the published records, from 1996 to 2024. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.

For Theodor, the clearest high point is 2021. The latest England and Wales figure is 61 births in 2024, compared with 76 at the peak.

Babies born per year

Theodor
019385776199620102024

Decades

Theodor by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Theodor was a short-lived spike or a name that stayed in regular use. Average rank is calculated only from years where a published rank exists.

Decade Average rank Total births Years covered
2020s #611 301 5
2010s #981 340 10
2000s #2023 80 10
1990s #2425 16 4

Geography

Where Theodor is most common

The bars show the latest published local birth counts for Theodor. They are useful for spotting where the name is showing up in real numbers, while the rank beside each bar shows how strongly it performs inside that region.

Theodor ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #415 in 2015.

Northern Ireland
3
Scotland
3

Across the UK

Theodor in Scotland and Northern Ireland

Scotland (NRS)

#727 in 2024

4 years of NRS records, 14 total registered

Northern Ireland (NISRA)

#415 in 2015

1 years of NISRA records, 3 total registered

Notable bearers

Famous people named Theodor

  • Theodor Obholzer

    sport cyclist

    British cycling rider

    1999-

  • Theodor Gast

    physicist

    British physicist

    1916-2010

  • Theodor Gaster

    archaeologist; assyriologist

    American biblical scholar (1906–1992)

    1906-1992

  • Theodor Rosebury

    bacteriologist

    American bacteriologist

    1904-1976

  • Theodor Estermann

    mathematician; university teacher

    German mathematician (1902-1991)

    1902-1991

Related

Names similar to Theodor

FAQ

Theodor: questions and answers

How popular is the name Theodor in the UK right now?

In 2024, Theodor was ranked #622 for boys in England and Wales, with 61 births registered.

When was Theodor most popular?

The peak year on record was 2021, with 76 babies registered as Theodor in England and Wales.

What is the meaning and origin of Theodor?

A masculine name of Greek origin meaning "gift of God".

How many people are called Theodor in the UK?

A total of 737 babies have been registered as Theodor across the 29 years of ONS England & Wales records shown here, plus 14 more in Scotland and 3 in Northern Ireland.

Where is Theodor most common?

In the latest published local rankings, Theodor ranks best in Northern Ireland, where it placed #415 in 2015. The regional bars on this page use birth counts, so they also reflect the size of each region.

Which records is this page based on?

The England and Wales timeline uses ONS baby-name records. Scotland figures come from NRS and Northern Ireland figures come from NISRA. Counts are registrations in published baby-name files. The living estimate uses those birth registrations with ONS national life tables.