The Haji Khan archaeological sites are located within the precinct of the Ibn Sina Petrochemical Company in the province of Hamadan, western Iran. A single season of excavations directed by Esmail Hemati Azandaryani was undertaken in 2017 and led to the discovery of a temple dating to the Median period. This temple, with its stepped lozenge plan, is very similar to, but larger than the Central Temple at Tepe Nush-i Jan near Malayer.
