Mary Hillevi Lagerstam (since 1958 Mannermaa; 9 August 1923 – 21 October 1998) was a Finnish actress.
Lagerstam worked for Helsinki City Theatre for over 40 years and appeared in 37 films.
[1] She received a Jussi Award for Best Actress in a Leading Role in 1970, for the film Takiaispallo.
[2] Lagerstam married actor Esko Mannermaa in 1958 and was widowed in 1975.
They appear together in the 1955 film Nukkekauppias ja kaunis Lilith.