Marina Oswald est née le 17 juillet 1941 à Molotovsk, Arkhangelskaya oblast, RSFSR, USSR [aujourd'hui Severodvinsk, Russia]. Elle a été mariée avec Kenneth Jess Porter et 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.