Olga Kazi (born 10 May 1941 in Kispest, Budapest)[1] is a retired female middle distance runner from Hungary. She is a multiple Hungarian Athletics Championships winner, having collected two gold medals in 400 metres, five on 800 metres and one each in 1500 metres and cross country running.[2] In addition Kazi twice represented her native country at the Summer Olympics: in 1960 and 1964. She set her personal best in the women's 800 metres (2:05.0) on 16 September 1962 at the European Championships in Belgrade.
Kazi married to fellow Olympian István Gyulai, with whom she had two children, Miklós and Katalin.