Grafenrheinfeld is a municipality in the district of Schweinfurt in Bavaria, Germany. The municipality is home to the nuclear power station, Grafenrheinfeld, which opened in 1982.

The nuclear power station Grafenrheinfeld (short: KKG - not to confused with the similarly abbreviated nuclear power station Goesgen in Switzerland) is located south of Schweinfurt at the Main. Commencement of construction was 1974, start-up took place 1981. It consists of a 3rd Generation pressurized water reactor ("pre-Konvoi") with an electrical output of 1345 MW. Operator is the E.ON nuclear power GmbH headquartered in Hanover. The two cooling towers with a height of 143 m are visible from far away. The nuclear power station was "power station world champion" in both years 1984 and 1985. In the much discussed anti-nuclear power novel Die Wolke by Gudrun Pausewang, a fictitious nuclear disaster occurs at Grafenrheinfeld, releasing a radioactive cloud which pollutes much of Germany. In the film of the same name, a fictitious plant name is used. Temporary storage facilities for depleted core fuel elements at the location went into use on 1 March 2006.

The KFU (nuclear reactor remote control, German Kernenergiefernüberwachung) mast Grafenrheinfeld is a guyed steel framework mast for the measurement of meteorological parameters and environmental radioactivity. It is visible for a long distance and is outside of the plant area approximately 750 meters south the power station. The KFU-mast is 164 meters high and was built in 1977/78.