Marina Zhirova (Russian: Марина Жирова) (born 6 June 1963 Yegoryevsk) is a Soviet athlete who competed mainly in the 100 metres, training at Trudovye Rezervy in Moscow Oblast.
She competed for the USSR in the 1988 Summer Olympics held in Seoul, South Korea in the 4 x 100 metres where she won the bronze medal with her team mates Lyudmila Kondratyeva, Galina Malchugina and Natalya Pomoshchnikova.