Casey vs Greg
Comparing Casey and Greg? Both are popular picks for parents in 2026. Casey ranks in the Top 1000 tier and traces to Irish naming roots (meaning "Vigilant, watchful"). Greg sits in the Top 1000 tier with Greek origins (meaning "Watchful, alert").
Casey
- Meaning: Vigilant, watchful
- Origin: Irish
- Popularity (2026): Top 1000
- Full Casey name page
Greg
- Meaning: Watchful, alert
- Origin: Greek
- Popularity (2026): Top 1000
- Full Greg name page
Which name is more popular: Casey or Greg?
In our 2026 popularity tracker, Casey ranks higher (Top 1000) than Greg (Top 1000).