Fiadh is an Irish name, pronounced roughly FEE-a, that means "wild" and in older Irish also "deer", which gives it a sense of untamed nature. It was practically unknown a generation ago but has become one of the most popular girls' names in Ireland in the 2020s, and Irish American families have started to follow. In the United States Fiadh had fewer than five births in 2000, stood at number 7210 in 2018 and has risen every year since to number 1995 in 2025.