Rex is a boy's name of English origin meaning “king.” In 2024 it was given to 316 boys in the United States.
Rex belongs to the English & American tradition. Its meaning — “king” — is the sense carried by its English roots, and it is the meaning we verified against published sources for this page.
In the United States, Rex first appears in Social Security records in 1880. It climbed to its best-ever rank of #170 in 1951, and in 2024 316 babies received the name — 60,160 in total since 1880. Those are the official counts, not estimates.
More names from the English & American shelf:
Rex means “king” in its English roots. We check every meaning against published sources before it appears here.
Rex is a boy name. In 2024, 316 babies received the name in the US.
Rex comes from the English & American tradition.
Rex first appears in US records in 1880. Its best-ever ranking was #170 in 1951, and 316 babies were given the name in 2024.
Rex is pronounced /ɹɛks/ (IPA).
Meaning and origin for this page were checked against this source. US popularity figures are from the Social Security Administration's public baby-names data. England & Wales figures are from the Office for National Statistics. If you spot an error, write to [email protected] — accuracy is the whole point of this site, and corrections are made fast.
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