The Zagorje-Trbovlje subdialect (zagorsko-trboveljski govor[1]) is a Slovene subdialect in the Styrian dialect group. It is a subdialect of the Lower Sava Valley dialect[2] and is spoken in the Central Sava Valley, including the settlements of Zagorje ob Savi, Trbovlje, and Hrastnik.[3]