Peter Johannes Gertrudis Winnen (born 5 September 1957) is a Dutch former road racing cyclist. He competed at the 1980 Summer Olympics in road racing and finished in 26th place. After the Games he turned professional in 1981. Among his 14 victories were two stages at Alpe d'Huez in the Tour de France and a national championship. He came third in the Tour de France in 1983.
On the Dutch TV-show Reporter, Steven Rooks, Maarten Ducrot and Winnen admitted taking doping in their careers. Winnen talked about his Tour in 1986. "I was very bad and had the choice: go back to home or to provide me with testosterone." â Winnen reached Paris. During his career with Raleigh, Panasonic and Buckler, Winnen used testosterone, amphetamines and corticosteroids.