The aim of this study is to research geothermal potential of the Kocabaslar hot spring. Geological, hydrogeological and geophysical investigations were conducted related to topic around the hot spring. Lithological units which composed of Eocene volcanics, Eocene sedimentary rocks and Quaternary alluvium were determined in the geological study. There are many tectonic lines in the region. Kocabaslar hot spring flows up through approximately E-W trending normal fault zone.