This is a list of the bird species recorded in Cambodia. The avifauna of Cambodia include a total of 636 species, of which 2 have been introduced by humans. 2 species are endemic to Cambodia. This list's taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) follow the conventions of The Clements Checklist of Birds of the World, 2019 edition. The family accounts at the beginning of each heading reflect this taxonomy, as do the species counts found in each family account. Introduced species are included in the total species counts for Cambodia.