The name Fiona means White, Fair and is of Scottish origin. Fiona is a name that's been used primarily by parents who are considering baby names for girls.
Fiona Apple, singer. Invented in by 19th century Scottish author William Sharp, who used it as a pen-name: Fiona Macleod. Sharp presumably intended Fiona to be a name based on the modern Gaelic word fionn, which means "white, fair."