Gillian
Meaning
"youthful"
Origin: Latin
Cultural Roots
Quick Stats
- Popularity Rank
- #3,126
- Total SSA Count
- 51
- Syllables
- 3
- Formality
- Moderate
- Nicknames
- Gill, Gilly, Jill
Baby Name Comparison — 2026
"youthful"
Origin: Latin
"happiness, joy"
Origin: Welsh
Gwenyth is more popular, ranked #3125 vs #3126 for Gillian.
Historical US popularity rank — lower number means more popular.
Historical trend data not available for this comparison.
Names that pair well as siblings.
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Gwenyth is more popular, ranked #3125 compared to Gillian at #3126 in the United States.
Gillian means "youthful" (Latin origin). Gwenyth means "happiness, joy" (Welsh origin).
Gillian is primarily a girl name. Gwenyth is primarily a girl name.