Rex
A boys’ name of Latin origin, meaning king.
Babies a year
217
England and Wales, 2025
Rarity
Uncommon
among names in use
US popularity
#859
down from #794
UK popularity
#228
217 babies · down from #216
How Rex has moved
View as table
| Year | US rank |
|---|---|
| 2015 | #680 |
| 2016 | #634 |
| 2017 | #607 |
| 2018 | #631 |
| 2019 | #653 |
| 2020 | #680 |
| 2021 | #698 |
| 2022 | #698 |
| 2023 | #722 |
| 2024 | #794 |
| 2025 | #859 |
In 2025, 217 babies in England and Wales were named Rex. In the US, 428 were, though that figure is from 2017 — the most recent full year we hold. Its US peak was 1,503 in 1951.
Looking further back: between 1880 and 2008, Rex was most common in 1955, when it went to 0.07% of American babies of that sex. Squarely vintage-revival territory.
Names about as common as Rex
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