German liberal politician and Protestant parish pastor.
Originally a follower of the conservative-clerical Christian Social Party, Naumann later became interested in the social theories of Max Weber.
In 1896 he cofounded the National-Social Association as an liberal active of the Social-Democrats.
Later in his life, Naumann worked for an approachement of German social democratic and liberal movements, but faced major opposition from conservatives.
In 1919 Friedrich Naumann was among the founders of the social liberal German Democratic Party and was elected into the Weimar Germany Parliament.
Naumann is often considered an advocate of German nationalism, due to his book Mitteleuropa (1915) on the geopolitics of a Central Europe under German leadership.