Katsuki (written: 香月 or 勝生) is a Japanese surname. Notable people with the surname include:
, Japanese general , Japanese voice actress , Japanese baseball player , Japanese baseball player
Katsuki (written: 勝己, 勝記, 克己, 克紀, 克貴 or 克樹) is also a masculine Japanese given name. Notable people with the name include:
, Japanese baseball player , Japanese music critic , Japanese swimmer , Japanese baseball player , Japanese baseball player
Fictional characters: , a character in the manga series Comic Girls , protagonist of the anime series Yuri on Ice , a character in the manga series My Hero Academia