Kazuki Hiiragi is a Japanese voice actor born on May 10th in Shiga Prefecture, Japan. He is affiliated with the talent agency Production Baobab and is known to speak the Kansai dialect. His name in Japanese is written as 柊 一希.

Hiiragi has a small but confirmed body of work in anime voice acting. One of his known roles is Andou in the series Eternity: Shinya no Nurekoi Channel. Another credited role is providing the voice for the character Marine in the series Otherside Picnic. According to available records, these are two of his known voice acting credits.