In this article, the microfungi grown in Sivas province and their hosts are given. The research was carried out between 1996 and 1998. Approximately 2700 vascular plant specimens infected and non-infected with microfungi were collected from the area. At the end of the studies on the host specimens, 38 families, 171 genera and 315 taxa were established, and 44 host specimens are given at the generic level.