Fellinghausen is a constituent community of Kreuztal, Siegen-Wittgenstein, North Rhine-Westphalia, Germany.

Until 1818 the rural character remained intact, but with industrial development a change to the working class community took place, in which agriculture was only a part-time occupation.

On 1 January 1969, Fellinghausen was incorporated into the city of Kreuztal, which was created as part of the communal reorganization.

A special feature in Fellinghausen is the historical Hauberg, which shows the form of traditional forest use in the Siegerland.

Regular guided tours for school classes, clubs or private groups are conducted under the direction of the Waldgenossenschaft Fellinghausen in cooperation with the Forstamt Hilchenbach.