This is a list of the bird species recorded in Guinea-Bissau. The avifauna of Guinea-Bissau include a total of 547 species.
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, 2022 edition. The family accounts at the beginning of each heading reflect this taxonomy, as do the species counts found in each family account. Accidental species are included in the total species count for Guinea-Bissau.
The following tag has been used to highlight accidentals. The commonly occurring native species are untagged.