Ophryophryne microstoma is a species of frog in the family Megophryidae. It is found in Cambodia, China, Laos, Thailand, and Vietnam. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, rivers, and swamps. It is threatened by habitat loss. References microstoma Amphibians of Cambodia Amphibians of China Amphibians of Laos Amphibians of Thailand Amphibians of Vietnam Taxonomy articles created by Polbot Amphibians described in 1903 Taxobox binomials not recognized by IUCN