Fernmeldeturm Willebadessen, Communication tower in Willebadessen, Germany.

The Fernmeldeturm Willebadessen is a concrete communications tower located in the Eggegebirge mountain area that relays radio broadcasts and mobile signals across the region. Multiple transmission facilities are mounted at different heights to serve a wide coverage area for digital and cellular services.

The tower was built in the late 1980s by the German postal service as a replacement for an older steel structure that had served the area. It has since grown into a modern telecommunications hub serving multiple broadcast and mobile network operators.

The tower carries the FM programme of Radio Hochstift and, since 7 August 2019, a nationwide DAB+ multiplex in a single-frequency network with other transmitters. WDR programmes were added on 19 February 2020 and the state-wide audio.digital NRW offering on 29 October 2021. Locals once nicknamed its predecessor, a 1965 steel lattice mast, the "Willebadessener Eiffelturm".

The tower is not open to visitors: there is no observation deck, elevator or guided tour, and the operating floor at 45 m is technical space only. It stands at 417 m above sea level near the Lichtenauer Kreuz junction of Lichtenauer Weg and Eggeweg, west of Willebadessen, so it can be seen from the surrounding paths but not entered.

The tower replaced a roughly 150-metre steel lattice mast from 1965, nicknamed the "Willebadessener Eiffelturm", which was dismantled in spring 1995 because maintenance and pending repairs made continued operation uneconomical.