Kōki Ishige is a Japanese child actor and voice actor born on May 13, 2009. He is affiliated with the talent agency Theatre Academy. His height is recorded as 152 cm in one source and 157 cm in another. His listed hobbies include marathons, and his skills include sword fighting.

Ishige began his career as a child actor, appearing in live-action productions. In 2019, he appeared in the Japanese film Super Shonantanteidan NEO -Beginning-. The following year, in 2020, he had roles in two television dramas, Kono Misato Susupense Kisou 235 and Fukyouwaon Honoo no Keiji VS Koori no Kenji, where he played younger versions of characters.

His first known voice acting role in anime is the character Kuupo in the series Snorunt's Summer Vacation, known in Japanese as Fubuki no Natsuyasumi. This series is part of the Pokétoon brand. This role represents his primary credited work in animation. Information regarding further recurring collaborations with specific directors, studios, or other voice actors, as well as notable industry achievements or awards, is not available.