Theo
A short form of Theodore and Theodora, from the Greek Theodoros, which joins theos, god, with doron, gift.
Theo in 2025
Theo was given to 3,966 babies in the United States in 2025, making it the 145th most popular name of the year. That is roughly one in every 836 babies born.
The history of Theo
Theo reached its highest point in 2023, when 4,182 babies were given the name, ranking 130th that year.
Across the 146 years of records since 1880, 39,333 babies have been named Theo. Half of them were born before 2020, which places the name's centre of gravity with Generation Alpha.
Theo by decade
| Decade | Babies named Theo | Best rank |
|---|---|---|
| 1880s | 221 | 708 |
| 1890s | 330 | 743 |
| 1900s | 522 | 639 |
| 1910s | 1,447 | 822 |
| 1920s | 1,845 | 872 |
| 1930s | 1,045 | 1,040 |
| 1940s | 766 | 1,308 |
| 1950s | 545 | 1,837 |
| 1960s | 390 | 2,552 |
| 1970s | 405 | 2,534 |
| 1980s | 540 | 2,403 |
| 1990s | 605 | 3,329 |
| 2000s | 1,391 | 2,271 |
| 2010s | 8,245 | 340 |
| 2020s | 21,036 | 130 |
Where Theo is heading
Theo has grown more than 5.2 times over the past decade, from 765 babies in 2015 to 3,966 in 2025.
Names like Theo
Names that rose and fell at the same time as Theo.