Kelly vs Theresa
Comparing Kelly and Theresa? Both are popular picks for parents in 2026. Kelly ranks in the Top 250 tier and traces to Irish naming roots (meaning "Warrior"). Theresa sits in the Top 250 tier with Greek origins (meaning "Harvest").
Kelly
- Meaning: Warrior
- Origin: Irish
- Popularity (2026): Top 250
- Full Kelly name page
Theresa
- Meaning: Harvest
- Origin: Greek
- Popularity (2026): Top 250
- Full Theresa name page
Which name is more popular: Kelly or Theresa?
In our 2026 popularity tracker, Kelly ranks higher (Top 250) than Theresa (Top 250).