Fionn
Meaning
fair, white (legendary hero Fionn mac Cumhaill)
Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Fionn has stayed rare in US records the whole time: no peak decade to name.
When you meet Fionn
Most people given the name Fionn in the United States are children or teenagers today. The name belongs to this generation.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
The Fionn deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Fionn 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 Fionn fits with your family’s names and surname.
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