Hans Zierold (born 16 April 1938) is a retired German swimmer. He competed at the 1956 and 1960 Summer Olympics in three events in total. In 1956 he finished fifth in the 400 m and 4×200 m freestyle events, whereas in 1960 he placed seventh in the 4×200 m relay. On 14 September 1957 he set a new European record in the 200 m butterfly.
In April 1958 he fled from East to West Germany.
References
Hans Zierold. sports-reference.com Hans Zierold, Olympic participant, born in 1938, swimmer, escaped in 1958. zov-sportverraeter.de Flucht ohne Reue. Die Zeit; 24 April 1958 Die DDR im Jahr 1957. gera-chronik.de, see also :File:Bundesarchiv Bild 183-48742-0002, Hans Zierold, Sagaiduk.jpg