Comprehensive examination of cercosporoid leaf-spotting hyphomycetes were carried out in the Vientiane capital area of Laos. Twenty-two species of Cercospora, Passalora and Pseudocercospora, including two new species and a new variety are identified, described and illustrated. Taxonomic novelties are the new species Passalora dipterocarpi, P. helicteris-viscidae, and the new variety Pseudocercospora mannanorensis var. paucifasciculata.