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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 have carried the name since. 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.

#228 in England & Wales (2025) · #423 in New Zealand (2025) · #647 in Scotland (2025) · #1,127 in Canada (2025) · #1,447 in Sweden (2025) · #21,208 in Italy (2024) · #520 in Ireland (2024) · #352 in N. Ireland (2022) · #3,174 in Austria (2022) · #6,183 in France (2020) · #1,194 in Belgium (2019) · #7,998 in Ecuador (2014).

Famous Rexes

• Rex Tillerson — American businessman and diplomat (born 1952)
• Rex Harrison — British actor (1908–1990)
• Rex Stout — American writer (1886–1975)
• Rex Linn — American actor (born 1956)
• Rex Brown — American bassist (born 1964)

In stories & tradition

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

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 · Richie · Denis

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

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