Olga Mikhailovna Ostroumova was born on 21 September, 1947 in Buguruslan, in Orenburgskaya oblast. In the Ostroumov family, there had been several generations of priests.
There were four children in the family – three daughters and a son. After graduating from school, Olga decided to go to Moscow to study as an actress and, after arriving in the capital in 1966, applied to GITIS. One of her teachers was the famous theatre director P. Khomskiy. After the end of her studies in 1970, Khomskiy recommended the young actress to the company of the Moscow Theatre for Young Audiences, at the time one of the country’s best theatre companies.From 1973 through 1983, Olga Ostroumova worked in the Theatre on Malaya Bronnaya, and played roles in both the classical and contemporary repertoire.
From 1983 onward, Olga Mikhailovna Ostroumova worked as one of the leading actresses of the Mossovet Theatre. She began working in film while still a student. Her first role, in the children’s cult classic “We'll Live Till Monday” (1968) as the charming schoolgirl Rita Cherkasova, set her career on the rise to stardom. But the role of the mischievous anti-aircraft gunner Zhenka, in Stanislav Rostotskiy’s film “But Dawns Here are Quiet” (1972) brought Olga (and the film’s other actresses) great national acclaim.