Dora Fabian (1901– 4 April 1935) was a German socialist and anti-Nazi activist.
She was the daughter of Else Levy Heinemann and Hugo Heinemann a socialist lawyer who defended Trade Unionists and political activists in court.
This environment nurtured her interest in politics and during the First World War she became a member of the Independent Social Democratic Party of Germany.In 1924 she married Walter Fabian a fellow social democratic activist.
She became disillusioned with the politics of the Social Democratic Party of Germany and joined the Socialist Workers' Party of Germany.