Greg
Meaning
short form of Gregory, 'watchful, vigilant'
The formal names behind Greg
Greg is an established short form of this name.
Gregory · Greek origin · watchful, vigilant
Greg's name family
One shared root links 4 names across 2 languages.
Shared root: from Greek Gregorios "watchful, alert", sixteen popes' favorite
The constellation
More branches
Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Greg peaked in the 1960s.
See popularity in Brazil
Popularity in Brazil
245 people · the #21,979 first name in Brazil · about 1 in 1,000,000 · median age 31
Among people named Greg living in Brazil at the 2022 census, more were born in the 1980s than in any other decade.
Source: IBGE, Censo Demográfico 2022
When you meet Greg
Most people given the name Greg in the United States were born between 1950 and 1979. The Greg you meet today is most often in his 50s or 60s.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
The Greg deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Greg truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Greg fits with your family’s names and surname.
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