Vitosha Mountain TV Tower, better known as Kopitoto (, The Hoof) after the rock outcrop () it stands on, is a tall TV tower built of reinforced concrete on Vitosha Mountain near Sofia, Bulgaria. The footprint of the tower has the shape of a hexagon with three of the sides extended (i.e. almost triangular). From the tower there is a commanding view of Sofia, and the tower can be seen from everywhere in Sofia, making it a landmark of Sofia's skyline. It is the second tallest television tower in Bulgaria.