Grafendorf bei Hartberg is a municipality in the district of Hartberg-Fürstenfeld in Styria, Austria.

The area around Grafendorf was inhabited already in the Neolithic Age, as some finds prove.

Soon after, the eastern Styria was conquered by the Hungarians, so that the settlement only after the reconquest by Henry III.

In 1158, Vornbach Abbey became landlord through a donation, the administration was carried out by the provost Gloggnitz.

In the possession of Vornbach Abbey Grafendorf remained until the Reichsdeputationshauptschluss in 1803, after which it fell to the state and auctioned in 1815 to the owner of a glass factory.