Koki Ishii is a professional footballer from JPN and is currently 32 years old. He is on the books of AC Nagano Parceiro and wears shirt number 16. His main role on the pitch is Defender. He measures 172cm in height and weighs 67kg.

Across the J2/J3 100 Year Vision League 2026, Koki Ishii appeared in 3 matches and averaged 0 tackles, 0 interceptions, 0 clearances, and 0 blocked shots per game.