Ryotaro Onishi is a 28-year-old professional football player from JPN. He currently plays for Roasso Kumamoto, wearing the number 3 shirt. He plays primarily as a Midfield. He stands at 179cm tall and weighs 74kg. His preferred foot is Right. His current market value is estimated at 350K €.

His most recent move was a Free from FC Gifu to Roasso Kumamoto on 2023-01-08.

Across 2 appearances in the J2/J3 100 Year Vision League 2026, Ryotaro Onishi registered 0 goals and 0 assists, while completing 0 key passes out of 0 total passes with a passing accuracy of -.