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Rex

Boy's name · #859 in the US (2025) · Timeless

Popularity over time

Few names move less than Rex — on the books since 1880, #859 in 2025, and dependable in between. Roughly 60,000 boys share it. In all that time it has never once missed a year of the national records.

Across the states

See where Rex is more common.

Appears in 2020-2025 birth records of 35 states. See the full state-by-state map on this page.

Around the world

See how Rex ranks in other countries and regions.

#230 in England & Wales (2025) · #423 in New Zealand (2025) · #739 in Scotland (2025) · #1,447 in Sweden (2025) · #1,030 in Canada (2024).

Famous Rexes

• Rex Tillerson — 69th United States Secretary of State
• Rex Harrison — British actor (1908–1990)
• Rex Stout — American writer (1886–1975)
• Rex Linn — American actor
• Rex J. Walheim — American astronaut

In stories & tradition

• Rex (Metamorpho) — The Brave and the Bold
• Captain Rex — Star Wars: The Clone Wars (film)
• Rex Van de Kamp — Desperate Housewives (TV series)

What Rexes become

Among 496 notable people named Rex:

Sports figures appear 1.65× more often than among typical names — e.g. Rex Hartwig, Australian tennis player (1929–2022).

Similar names: Rexton · Frankie · Reggie · Terrence · Lex · Richie

Browse more boy names — popularity, trends and eras for 5,700+ American names, free.

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