Rio Tadokoro is a 20-year-old professional football player from JPN. At the international level, he represents Japan U18. He plays primarily as a Defender. He stands at 187cm tall and weighs 74kg. His preferred foot is Right.

His most recent move was a Transfer from V-Varen Nagasaki to Kochi United on 2026-07-01.

Throughout the Japanese J1 League 2026, Rio Tadokoro featured in 3 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.