Mladen Devetak is a professional footballer from SRB and is currently 28 years old. He is on the books of Rijeka and wears shirt number 34. At international level, he features for Serbia U21. His main role on the pitch is Defender. He measures 183cm in height and weighs 72kg. His stronger foot is Left. His estimated market valuation currently stands at 1.2M €.

His latest transfer saw him join Rijeka from Palermo via Free on 2024-08-06.

Across the Croatian Football League 2025-2026, Mladen Devetak appeared in 23 matches and averaged 1 tackles, 0.6 interceptions, 1.9 clearances, and 0.1 blocked shots per game.