Theodorus
Theodorus is a boy's name that peaked in 2024, when it was the 6,199th most popular in the United States. In 2025 it ranked 12,008th. About 40 Theodoruses are alive in the United States today, and half of them are over 1.
Popularity, 1880–2025
boys named Theodorus
By the numbers
- Total US births
- 35
- Estimated living today
- 40
- Median age today
- 1
- Peak year
- 2024
- Best rank
- 6,199th
- Rank in 2025
- 12,008th
- First recorded
- 2020
Notable Theodoruss
- Theodorus Lector (450–600)Byzantine historian
- Theodorus of Samos (born 550 BC)archaic Greek architect and sculptor
People named Theodorus with articles in the most Wikipedia languages. Data from Wikidata (CC0).
Names of 2024
The most popular boys’ names the year Theodorus peaked:
Theodorus elsewhere
| Country | Spelling | Births | Best rank |
|---|---|---|---|
| England and Wales boys | Theodorus | 6 | 4,991st |
| France boys | Theodorus | 5 | 1,153rd |
Counts come from each country's own records and are not comparable with the US figures above, which cover different years and a different definition of a recorded name. Where a country writes the name several ways, the spellings are added together and the most common is shown. A row marked name registrations is counting something else: Portugal ranks each of a child's two given names separately, so a girl registered Maria Leonor is in both the Maria row and the Leonor row, and that figure is not a number of children.
Theodorus among the living
How many people each country's register counts under the name, rather than how many were given it in any one year. Each register was read on one date, and they are not the same date.
| Country | Spelling | First forename | Any forename |
|---|---|---|---|
| the Netherlands boys | Theodorus | 41,602 | 130,615 |
| the Netherlands girls | Theodorus | 5 | 946 |
| Finland boys | Theodorus | — | 10 |
A count of people on a register – the Netherlands on 1 January 2018, Finland on 4 August 2026 – and not of births, so it cannot be compared with the figures above. Names with very few bearers are withheld, and a dash in the first-forename column means the register would not say rather than that nobody goes by it.
Related names
Theodorus against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.