Unisex name · Japanese

Rei

How to say it: RAY · /ˈreɪ/

Japanese 'beautiful, bell, spirit' by kanji - also Portuguese word for 'king'.

Rei was the 1,497th most popular boys’ name in the United States in 2025, given to 59 babies of either sex (Social Security Administration). The 2020s are its busiest decade so far, its births are up about 47% in ten years, and it is projected to slip to #1,556 by 2030.

Updated · SSA 2025 data, published May 2026 · How we compute these figures

#1,497for boys in 2025
1 in 26,954US babies
59born in 2025
#1,556projected for 2030
2020sits peak decade
under 1 in 200chance a classmate shares it

Key facts

Key facts about Rei
Rank among boys’ names, 2025#1,497
Babies born in 2025 (both sexes)59
Share of births1 in 26,954
Peak decade2020s
Change over 10 years+47%
Projected rank for 2030 (estimate)#1,556

Sources: Social Security Administration (SSA). How we compute these figures.

Its life, decade by decade

Rei is a newcomer: almost all of its history is from the last forty years.

1900195020002020–25
Peak: 17 per million births, 2020s.

What goes with it

Parents who love Rei also love

Honouring a Rei in the family

In the classroom

In a class of 25 children born in 2025, the chance that another child is called Rei is about under 1 in 200.

Around the world

This spelling is used in English, Japanese, Portuguese.

Famous people named Rei

From Wikidata and Wikipedia

Good to know

  • In Portuguese and Galician 'rei' is the ordinary word for 'king' — heard as a title-word, not just a name

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