Japanese firstname, Kanji: 風 meaning "Wind, Breeze, Air, Manners"
Fuu is a girl impossible to catch, living free like the wind and travelling where the breeze brings her. She is usually calm and with light agreable manners but can turn into a raging tempest when pushed to her limits.
Fuu Hououji (manga character from "Magic Knight Rayearth" by CLAMP)
Fuu from the Yamanaka Clan (manga character from "Naruto" by Masashi Kishimoto)
Rie Fuu (リエ フゥ) is a Japanese singer/composer, from her real name Rie Funakoshi (舩越 里恵)