Koyuki (小雪; full name Koyuki Katō , born 18 December 1976 in Zama, Kanagawa-ken) is a Japanese model and actress.
Koyuki started her model career in 1995 and has since starred in various Japanese dramas, TV and magazine ad campaigns and films. She frequently appears in Japanese print and television marketing campaigns for electronics company Panasonic. Her first, and to date only, international film was The Last Samurai where she played Taka, the wife of a Samurai slain by the character played by Tom Cruise, Nathan Algren. She will be in the upcoming Blood: The Last Vampire live-action starring Jun Ji-Hyun.