Gulnaz Radikovna Gubaydullina (Russian: ??????? ????????? ????????????, Bashkir: ???????????? ?????? ????? ????; born 14 February 1992) is a Russian modern pentathlete of Bashkir descent.
She has qualified for the 2016 Summer Olympics.
At the 2017 World Modern Pentathlon Championships, Gubaydullina won the gold medal in the individual competition, becoming the second Russian woman to do so (the other being Elizaveta Suvorova in 1997).