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Gender: Male Meaning of Rex: "king" Origin of Rex: Latin Rex's Popularity in 2017: #609

The name Rex is a boy's name of Latin origin meaning "king". Rex is ranked #609 on our popularity charts and is often added to lists like British Boy Names and discussed in our forums with posts like "Quick Question Thread?!".

From the experts:

Now that many dogs are named Max, it's safe to use this sleek, sexy, 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.

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. Rex ("Sexy Rexy") Harrison was actually christened Reginald. And quite fittingly, Rex is name of a dinosaur in Toy Story.

Other options: the French version Regis or the literal King.

Find other names based on Rex using our baby name generator.

Famous People Named Rex

Reginald Carey "Rex" Harrison, English actor
Rex Burkhead - American NFL football player
Rex Daniel Grossman, American NFL football player
Rex Hadnot, American NFL football player
Rex Murphy, Canadian newscaster
Rex Goudie, Canadian Singer
Rex Ashley Ryan, American NFL football Coach
Rex Maynard Linn, American actor
Rex McNicol Robbins, American character actor
Rex Lee, American actor
Rex Allen, American actor
Rex Darwin Davis, first director of the U.S. ATF agency
Rex Wayne Tillerson, American Secretary of State and CEO of Exxon
Rex Todhunter Stout, American detective novelist
Rex Russell (b. 2003), son of actress Hetty Baynes and director Ken Russell
Rex Champion (b. 2008), son of drummer Will Champion of Coldplay; twin of sister Juno Champion
Rex Coltrane Kelly (b. 2009), son of actress Natascha McElhone and Martin Kelly
Rex William Wickham (b. 2010), son of English author Sophie Kinsella
Rex Rayne Wood (2013) son of Fearne Cotton and Jesse Wood
Rex Harrison Lamar (b. 2011), son of model Niki Taylor and Burney Lamar
Rex (b. 2015), son of actress Lucy Punch

Pop Culture References for the name Rex

Rex Manning, character in the movie Empire Records
Rex DiMera, character on American soap opera Days of Our Lives
Rex Britten, character on TV's "Awake"
Rex aka Racer X, character in anime Speed Racer
Rex, dinosaur in the Toy Story films
Rex Van de Kamp, character on TV's "Desperate Housewives"
Captain Rex, character in 2008 animated television series "Star Wars: The Clone Wars"
Rex Kyubi, character in video game 'Ace Attorney'
Reginald "Rex" Bateman, main character in G. A. Henty's, With the Allies to Pekin
Rex The Tyrannosaurus Rex, character in "We're Back! A Dinosaur's Story"
Rex Powers, Robbie Shapiro's puppet/dummy on TV's "Victorious"
Rex Splode, character in Invincible comics
Oedipus Rex, Latin name for the play by Sophocles
Rex Mason (aka Metamorpho), character in the DC Universe
Rex main character in "Xenoblade Chronicles 2"


Starelli Says:


Rex Murphy, anyone?

paulapuddephatt Says:


They say the same about Toby, one of my favourite boys' names. I don't think it matters. Some names work for both pets and people. We had a dog called Amber, when I was a kid, and that's popular as a girls' name. I've heard of multiple dogs named Amber, so it kind of is a dog name, but also a human name.

snowsbeloved Says:


I'm in the same boat. I love this name but DH is convinced it's a dog name :/

EW314 Says:


I LOVE this name. I don't care that people say it's a dog's name - I've met tons of dogs called Charlie, Sam, Tess and Daisy but never a canine Rex. It's a handsome, distinguished, punchy name with a fabulous spiky sound. This will be my first son's name if I can convince DH.

RoddyThlayli Says:


I think it would be okay as a nickname. Maybe for Hendrix, Praxis or Eryx?

ambercat Says:


My neighbor used to have a cat named Rex. If memory serves, the inspiration for his name was that Far Side cartoon where there is a dog in the a car talking to a dog sitting on a nearby lawn and he says something to the extent of, "Ha ha ha, Rex! After we go to the bank and the post office, I'm going to the vet to get tutored!" Even though my cat, Amber, thought that Rex was one ruggedly handsome older he-cat and she used to watch him from the window. I don't know about sticking it on an actual human.

blue_canary Says:


i love this name, but as a clone wars fan i'm fairly biased

Rachel Kent Says:


I love it for a little boy it doesn't give off a pet name at all I think it would be better as a second part of a double barrel name though eg Lincoln-Rex xx

eveyalecia Says:


I know everyone says it's a dog's name, but it actually has a long history of use for people... just look at the list of famous people named Rex! I like it because it makes me think of Rex Harrison and Old Hollywood. As a nickname for Reginald, I like it even better.

illia_raye Says:


This is my husband's name and I love it!

Theodora_Phoenix Says:


I like this name but everyone says it's a dog name.

Catastroffy Says:


I don't much like this for a dog or a lizard, let alone for a person.

The_Supernatural_Hufflepuff Says:


I grew up in a neighborhood with, if I remember correctly, at least three dogs named Rex so this name is not usable to me. All I can think of is a dog not a little boy.