Rex

At a glance

Rex is the #90 dog name in our records and #264 for cats. About 1 in 323 male dogs is called Rex, and the name is steady.

Data updated November 2026 · How we count

How popular is Rex?

#90dog name of 19,856
1 in 323male dogs
1,434dogs in the records
#264cat name

Girl or boy?

Girls 1%Boys 92%Not recorded 7%

1% girls · 99% boys among 1,330 dogs with a recorded sex

Rex over the years

Steady
012.825.62013: 21.9, 2014: 22.2, 2015: 15.7, 2016: 11.7, 2017: 16.3, 2018: 14.3, 2019: 18.7, 2020: 7.5, 2021: 13.7, 2022: 11.4, 2023: 8.6, 2024: 15.92013201520172019202120232024

Dogs named Rex per 10,000 dogs born that year, from the sources that record birth year.

Popular with these breeds

Names that sound like Rex

RouxRoxRocksRexsWrexRexyRexiRexx

Questions

Is Rex a girl or boy dog name?

It is almost always a boy's name (99% male).

How popular is Rex for dogs?

Rex is the #90 dog name of 19,856 in our data, with 1,434 dogs in public records. The name is steady.

How do you pronounce Rex?

Rex is said in one syllable. Tap Listen to hear it.

What names sound like Rex?

Roux, Rox and Rocks sound similar.

What breeds are often named Rex?

Pit Bulls, German Shepherds and Yorkshire Terriers are the breeds most often called Rex.

More dog names