Koki Tachi is a professional footballer from JPN and is currently 29 years old. He is on the books of Shonan Bellmare and wears shirt number 4. His main role on the pitch is Defender. He measures 173cm in height and weighs 73kg. His stronger foot is Right. His estimated market valuation currently stands at 250K €.

His latest transfer saw him join Shonan Bellmare from Nihon University via on 2020-02-01.

Across the J2/J3 100 Year Vision League 2026, Koki Tachi appeared in 3 matches and averaged 0.7 tackles, 1.3 interceptions, 2.7 clearances, and 0 blocked shots per game.