Rio Tadokoro is a 20-year-old professional football player from JPN. He currently plays for V-Varen Nagasaki, wearing the number 38 shirt. At the international level, he represents Japan U18. He plays primarily as a Defender. He stands at 187cm tall and weighs 74kg.

His most recent move was a from Teikyo High School to V-Varen Nagasaki on 2025-02-07.

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.