From Irish fionn (older Irish finn) meaning "fair" or "white". Fionn mac Cumhail was a legendary Irish hero who became all-wise by eating an enchanted salmon. He fought against the giant Fomors with his son Oisín and grandson Oscar.
Fionn is baby boy name mainly popular in Christian religion and its main origin is . Fionn name meanings is Fair, white, clear. Other similar sounding names can be Finn.