Jan (Cesar Jan) Adriaensens (6 June 1932 - 2 October 2018)^[1]) was a Belgian road bicycle racer. He finished twice on the podium of the Tour de France, with a third place in 1956 and in 1960. In both these years, he wore the yellow jersey as the leader of the general classification.

• 1953 – 45th
• 1955 – 28th
• 1956 – 3rd, wearing yellow jersey for three days
• 1957 – 9th
• 1958 – 4th
• 1959 – 7th
• 1960 – 3rd, wearing yellow jersey for four days
• 1961 – 10th