Winkler was born in Barmen, today part of Wuppertal, North Rhine-Westphalia, Germany, the son of a riding teacher.Winkler won his first German championship in 1952, but could not participate in the Olympic Games in Helsinki that year because he was classified as a professional due to his teaching in the 1940s.[3] In 1956 the Equestrian Games were held in Stockholm, as the athletes and their horses were not allowed to travel to Melbourne due to quarantine restrictions.[3] Winkler worked as a trainer for the German Olympic teams, along with Paul Schockemöhle and Herbert Mayer, leading them to success in Seoul in 1988.[8] He later published numerous books on riding and in 1991 founded the HGW-Marketinggesellschaft, a sports marketing firm that has helped produce various equestrian competitions.[3][10] On 12 June 2008, he received the Federal Cross of Merit in Warendorf from Ingo Wolf [de], minister of interior and sport in North Rhine-Westphalia.
Hans Günter Winkler at the 2012 German show jumping and dressage derby in Hamburg