Rex
2025 SSA
Below 5 births
About Rex
Now that many dogs are named Max, it's safe to use this sleek, solid, regal name again for your child. And with the charm of its final x, its regal meaning, and its offbeat simplicity, Rex is definitely one to consider.
Rex for boys#859 US
Coldplay's Will Champion used it for his twin son, and Natascha McElhone gave her little boy the doubly cool appellation Rex Coltrane, and Niki Taylor — intentionally or not — gave her son the full name of the British My Fair Lady star, Rex Harrison (who was actually christened Reginald). And quite fittingly, Rex is name of a toy T-Rex in Toy Story.
Other options: the French version Regis or the literal King.
Rex for girls
Rex is an unusual choice for a female name, as it is traditionally masculine in origin. Derived from Latin, Rex means "king" and carries a sense of authority and regality. While predominantly used for boys, some parents may choose Rex for a girl seeking a strong, commanding name with gender-neutral appeal. The name has ancient royal associations, being the Latin title for a king or monarch. As a female name, Rex remains extremely rare, offering a bold, distinctive option that breaks conventional naming patterns. It could be considered part of the trend toward traditionally masculine names being adopted for girls, similar to names like James and Ryan that have crossed gender lines in recent years.
Pronounced REKS.
As of October 2026, Rex ranked #859 in US births in 2025 SSA, peaked at #170 in 1951, Nameberry popularity #452.
Popularity & trends
Data table
| Year | US rank · boys | Births · boys | US rank · girls | Births · girls |
|---|---|---|---|---|
| 2014 | #661 | 389 | — | 0 |
| 2015 | #680 | 374 | — | 0 |
| 2016 | #633 | 423 | — | 0 |
| 2017 | #607 | 434 | — | 0 |
| 2018 | #632 | 420 | — | 0 |
| 2019 | #651 | 410 | — | 0 |
| 2020 | #683 | 377 | — | 0 |
| 2021 | #699 | 379 | — | 0 |
| 2022 | #697 | 380 | — | 0 |
| 2023 | #723 | 367 | — | 0 |
| 2024 | #794 | 316 | — | 0 |
| 2025 | #859 | 281 | — | 0 |
World rankings
Similar names
These 40 names were selected by our users looking for other names like Rex.
Similar boy names
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Rex on lists
Famous Rexs
- Reginald Carey "Rex" HarrisonBoy
English actor
- Rex BurkheadBoy
American NFL football player
- Rex Daniel GrossmanBoy
American NFL football player
- Rex HadnotBoy
American NFL football player
- Rex MurphyBoy
Canadian newscaster
- Rex GoudieBoy
Canadian Singer
- Rex Ashley RyanBoy
American NFL football Coach
- Rex Maynard LinnBoy
American actor
- Rex McNicol RobbinsBoy
American character actor
- Rex LeeBoy
American actor
- Rex AllenBoy
American actor
- Rex Darwin DavisBoy
first director of the U.S. ATF agency
- Rex Wayne TillersonBoy
American Secretary of State and CEO of Exxon
- Rex Todhunter StoutBoy
American detective novelist
- Rex Russell (b. 2003)Boy
son of actress Hetty Baynes and director Ken Russell
- Rex Champion (b. 2008)Boy
son of drummer Will Champion of Coldplay; twin of sister Juno Champion
- Rex Coltrane Kelly (b. 2009)Boy
son of actress Natascha McElhone and Martin Kelly
- Rex William Wickham (b. 2010)Boy
son of English author Sophie Kinsella
- Rex Harrison Lamar (b. 2011)Boy
son of model Niki Taylor and Burney Lamar
- Rex (b. 2015)Boy
son of actress Lucy Punch
Rex in pop culture
- Rex ManningBoy
character in the movie Empire Records
- Rex DiMeraBoy
character on American soap opera Days of Our Lives
- Rex BrittenBoy
character on TV's "Awake"
- Rex aka Racer XBoy
character in anime Speed Racer
- RexBoy
dinosaur in the Toy Story films
- Rex Van de KampBoy
character on TV's "Desperate Housewives"
- Captain RexBoy
character in 2008 animated television series "Star Wars: The Clone Wars"
- Rex KyubiBoy
character in video game 'Ace Attorney'
- Reginald "Rex" BatemanBoy
main character in G. A. Henty's, With the Allies to Pekin
- Rex The Tyrannosaurus RexBoy
character in "We're Back! A Dinosaur's Story"
- Rex PowersBoy
Robbie Shapiro's puppet/dummy on TV's "Victorious"
- Rex SplodeBoy
character in Invincible comics
- Oedipus RexBoy
Latin name for the play by Sophocles
- Rex Mason (aka Metamorpho)Boy
character in the DC Universe
- Rex SalazarBoy
main character in 2010 animated television series "Generator Rex"
- Rex is Latin for King. Female equivalent is ReginaGirl
or Queen.