Koki Tachi is a 28-year-old professional football player from JPN. He currently plays for Shonan Bellmare, wearing the number 4 shirt. He plays primarily as a Defender. He stands at 173cm tall and weighs 73kg. His preferred foot is Right. His current market value is estimated at 200K €.

His most recent move was a from Nihon University to Shonan Bellmare on 2020-01-31.

Throughout the J2/J3 100 Year Vision League 2026, Koki Tachi featured in 3 matches, averaging 0.7 tackles, 1.3 interceptions, and 2.7 clearances per game, while blocking 0 shots per game.