Rex
Rex is a boys' name of Latin origin meaning “King.” It ranked #859 in the United States in 2025.
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how do you pronounce Rex?
RECKS
where does the name Rex come from?
From the Latin rex, king, used on its own or as a short form of Rexford or Reginald.
Directly from the Latin word for king, Rex was popularized as a given name in the English-speaking world in the late 19th century. It has a bold, punchy, vintage charm reminiscent of golden-era Hollywood.
how popular is this name?
Rex has appeared in the US top 1,000 in 142 years since 1880, and fell outside it for 4. It peaked at #170 in 1951, and ranked #859 in 2025.
See the milestone years
| Year | Rank |
|---|---|
| 2025 | #859 |
| 2024 | #785 |
| 2023 | #721 |
| 2022 | #696 |
| 2021 | #698 |
| 2020 | #681 |
| 2019 | #651 |
| 2018 | #631 |
| 2017 | #607 |
| 2016 | #631 |
| 2010 | #703 |
| 1990 | #662 |
| 1980 | #488 |
| 1970 | #362 |
| 1960 | #214 |
| 1951 | #170 |
| 1950 | #196 |
| 1940 | #227 |
| 1930 | #234 |
| 1920 | #209 |
| 1910 | #304 |
| 1900 | #267 |
| 1890 | #316 |
| 1880 | #505 |
Source: SSA National Baby Names Dataset (through 2025). Years absent from the table are years Rex fell outside the top 1,000.
who are famous people named Rex?
- Rex Harrison
- Rex Orange County
- Rex Tillerson
what names are similar to Rex?
what names go well with Rex?
Sibling names that share Rex's rhythm and register without echoing it too closely.
quick answers about Rex
What does the name Rex mean?
Rex means “King”.
What is the origin of the name Rex?
Rex comes from the Latin naming tradition.
How popular is the name Rex?
Rex ranked #859 in the US in 2025, according to Social Security data. Its best year was 1951, at #170, and it has spent 142 years in the top 1,000 since 1880.
Is Rex a boy or girl name?
Rex is primarily a boys' name.
How do you pronounce Rex?
Rex is pronounced RECKS, with 1 syllable.
Last updated · Curated by HushName editorial
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