Rex

King; Old English origin meaning "ruler" or "monarch"

boyLatin

How does Rex feel alongside your favorites? Talk through the sound, meaning and fit with your family.

Rex meaning & origin

Rex is listed in our catalog as a boy name. Its listed meaning is "King; Old English origin meaning "ruler" or "monarch"". Listed origin: Latin.

Pronunciation

reks

Catalog phonetic spelling

Popularity

In 2024, Rex ranked #794 in US Social Security name records for male births. This is the latest verified year in our catalog, not a live ranking.

Rex popularity by year

US Social Security birth-name ranks. A smaller rank means more recorded births in the reported sex category.
Birth yearRank
2020#683
2021#699
2022#697
2023#723
2024#794

Source: Social Security Administration. US data is not a worldwide measure of usage. Missing years are not zero births.

Middle Name Ideas

  • Rex James
  • Rex Alexander
  • Rex William
  • Rex Thomas

Famous Namesakes

  • Rex Harrison (actor)
  • Rex (Toy Story character)

Sources & notes

Meanings, origins, pronunciations, and namesakes are catalog entries that have not yet completed source-by-source editorial review. Nicknames and middle-name pairings are ideas to try, not usage statistics. We show birth-name ranks only when the record includes source-file provenance; missing data is not evidence of rarity.

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Frequently Asked Questions About Rex

What does the name Rex mean?

Rex is listed in our catalog as a boy name. Its listed meaning is "King; Old English origin meaning "ruler" or "monarch"". Listed origin: Latin.

How do you pronounce Rex?

Our catalog's pronunciation guide is reks. Pronunciation can vary by language and family.

How popular is the name Rex?

In 2024, Rex ranked #794 in US Social Security name records for male births. This is the latest verified year in our catalog, not a live ranking.

What middle names could work with Rex?

Try Rex James, Rex Alexander, Rex William, Rex Thomas aloud with your surname. These pairings are subjective suggestions.

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