The red-billed woodcreeper (Hylexetastes perrotii) is a species of bird in the subfamily Dendrocolaptinae of the ovenbird family Furnariidae.

Their rump, wings, and tail are bright rufous to rufous-chestnut, with dusky tips on the primaries.

Their bill is wine-red to brownish and their legs and feet green or olive with some brown and gray.

Juveniles have weak streaks on their crown, are more heavily barred and rufescent below than adults, and have dark gray eyes and a dusky to blackish bill.

[4] The red-billed woodcreeper's diet is mostly a wide variety of arthropods and also includes small vertebrates such as frogs and snakes.

It forages by sallies from a vertical perch, fairly low when attending ant swarms and up to the subcanopy elsewhere.

Its song is "a loud, ringing series of 2–6 whistles...almost disyllabic, first part longer and sometimes lower in pitch, second higher and more emphasized".

[4] The IUCN follows HBW taxonomy and so has not assessed the red-billed woodcreeper sensu stricto as a separate species.

[9] The red-billed woodcreeper is poorly known and "probably uncommon to rare throughout its range, and apparently present at most sites in low densities and on large, mutually exclusive territories."