Jan Thielmann is a professional footballer from GER and is currently 25 years old. He is on the books of FC Köln and wears shirt number 29. At international level, he features for Germany U21. His main role on the pitch is Defender. He measures 178cm in height and weighs 72kg. His stronger foot is Right. His estimated market valuation currently stands at 5M €.

His latest transfer saw him join FC Köln from Koln U19 via on 2020-01-17.

Across the Bundesliga 2025-2026, Jan Thielmann appeared in 19 matches and averaged 0.8 tackles, 0.6 interceptions, 1.9 clearances, and 0.3 blocked shots per game.