Twenty-seven fungi (18 ascomycetes, 9 anamorphic fungi) were recorded from 91 driftwood samples collected from Sarushima Island, Japan. Ceriosporopsis halima, Corollospora maritima, and Halosphaeria appendiculata occurred most frequently in the fungal community. Other common fungi include: Remispora maritima, Tirispora sp., Monotosporella sp., Phoma sp., and Trichocladium achrasporum. Among the 27 fungi collected, 7 are possibly new to science. Nemania maritima and Panorbis viscosus are new records for Japan. Phylogenetic analyses of LSU rDNA sequences placed Naufragella delmarensis with Nohea umiumi in a highly supported clade. Both Naufragella and Nohea have similar morphological characters that, in combination with the molecular data, support their placement in a single genus. The new combinations Nohea delmarensis and N. spinibarbata are proposed. The anamorph–teleomorph connection of Trichocladium achrasporum–Halosphaeriopsis mediosetigera was supported with molecular data for the first time.