In this study, the Byzantine coins that are among the collections of Kütahya and Bolvadin Museums, located in the geography encompassing the Phrygia region in the Middle Ages, and the Byzantine coins which were acquired in the Amorium and Aizanoi excavations will be discussed. The aim of this paper is to determine the statistics of the Byzantine Coins in the Ancient Phrygia according to their periods and to evaluate the coins within the limits of the general economic history of their region. The Phrygian region in the Middle Ages is roughly the area surrounded by the provinces of Eskişehir, Kütahya, Afyon, Denizli and Uşak. Phrygia is considered to be one of the important points of the operation carried out against the Arabs in the 8th and 9th century. As from the second half of the 9th century, we see a complete Byzantine sovereignty in Anatolia and therefore also a period of peace and tranquility. And as of the second half of the 11th century, the region became an area of conflict between the Christian and Muslim military forces. The coin finds support this as well. Firstly, the statistics of the Byzantine coins found in the museums and the excavations in the region were calculated according to periods and the data were graphed out. The obtained data were compared to the other areas, and it was observed that the Byzantine Empire was a common feature for most of the regions in Anatolia and that different parts portrayed local differences.