Ryuta Koike is a 31-year-old professional football player from JPN. He currently plays for Kashima Antlers, wearing the number 25 shirt. He plays primarily as a Midfield. He stands at 169cm tall and weighs 63kg. His preferred foot is Right. His current market value is estimated at 600K €.

His most recent move was a Free from Yokohama F. Marinos to Kashima Antlers on 2025-01-20.

Across 2 appearances in the Japanese J1 League 2026, Ryuta Koike registered 0 goals and 0 assists, while completing 0 key passes out of 52 total passes with a passing accuracy of 22.