Rex
BoyLatin
Rex is a boy name of Latin origin meaning "king".
About this name
Gender
Boy
Language
Latin
Religion
None
Popularity
11 / 100
Syllables
1
Length
3 letters
Meaning
king
Etymology
From the Latin word "rex" meaning king, derived from the Proto‑Indo‑European root *h₃reǵ- “to rule”. The term was used as a title for monarchs in ancient Rome.
Famous People Named Rex
- Rex Harrison — British actor (1908–1990)
- Rex Stout — American writer (1886-1975)
Frequently Asked Questions About Rex
What does the name Rex mean?
Rex means "king", and is of Latin origin.
What is the origin of the name Rex?
Rex originates from Latin, commonly used in Western Europe.
Is Rex a boy or girl name?
Rex is typically used as a boy name.
What religion is the name Rex associated with?
Rex is associated with None.
Are there famous people named Rex?
Yes — notable people named Rex include Rex Harrison (British actor, 1908–1990) and Rex Stout (American writer, 1886-1975).
Last updated: June 2026