Oustalet's Tyrannulet
- kingdom: Animalia
- phylum: Chordata
- class: Aves
- order: Passeriformes
- family: Tyrannidae
- genus: Phylloscartes
- species: Phylloscartes oustaleti
Domingos Martins- Santa Teresa
Espírito Santo- Cachoeiras de Macacu
Rio de Janeiro- Capâo Bonito
- Ubatuba
São Paulo
Brazil