Hajime Kanzaka
- Birthday: 1964-07-17
- Place of birth: Asago, Hyōgo Prefecture, Japan
- Also know as: かんざか はじめ
Hajime Kanzaka (神坂 一, Kanzaka Hajime, July 17, 1964) is a Japanese light novel author from Asago City, Hyogo Prefecture. He mainly writes fantasy and science fiction works. He is best known for being the author of the Slayers novel series, later adapted into manga and anime.
