List of birds of Sierra Leone

This is a list of the bird species recorded in Sierra Leone. The avifauna of Sierra Leone include a total of 677 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, 2021 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 Sierra Leone.

The following tags have been used to highlight accidental and introduced species. The commonly occurring native species are untagged.

• (A) Accidental - a species that rarely or accidentally occurs in Sierra Leone
• (I) Introduced - a species introduced to Sierra Leone as a consequence, direct or indirect, of human actions