Marina Oswald nació el 17 de julio de 1941 en Molotovsk, Arkhangelskaya oblast, RSFSR, USSR [ahora Severodvinsk, Russia]. Ha estado casada con Kenneth Jess Porter y Lee Harvey Oswald.
Oliver Stone's JFK (1991) portrayed her as having been polished and pampered by
the government and instructed on how to answer questions to make her
late husband Lee Harvey Oswald look like a psychotic. At the time the film was
released, Marina made it known that this was absolute fiction.