Halophytes of seven species, Carex scabrifolia Steud., Bullock, L., Bunge, Makino, Dumort., and L. were collected from the Taean Peninsula. Thirty-seven endophytic fungi were isolated from the root of halophytes, and analyzed using the DNA sequences of internal transcribed spacers (ITS). The diversity of all endophytic fungi was analyzed using diversity indices. The endophytic fungi associated with the halophytes belonged to seven orders; Eurotiales (78%), Capnodiales (5%), Hypocreales (5%), Agaricales (3%), Corticiales (3%), Glomerellales (3%), and Pleosporales (3%). At the phylum level, the endophytic fungi were composed of Asco- mycota and Basidiomycota. At the genus level, , and were confirmed. Among them, was the most abundant in the roots of the halophytes. This study analyzed the distribution and diversity of endophytic fungi on halophytes in the Taean Peninsula.