ABSTRACT: Endophytic fungal strains were isolated from 5 aquatic plant species (, , , and ) native to river wetland of tributary in Nakdong river. Total 34 strains were purely isolated, and then its internal transcribed spacer (ITS) regions were amplified. After that, phylogenetic analysis based on ITS sequences and deduction of diversity indices were done. Fungal isolates were belonged to 17 genera, concretely in and . Especially, fungal isolates were distributed intensively in genera and . This study deals with the diversity of endophytic fungal species that showing symbiotic relationship with their host aquatic plants.