The Great Xenops, Megaxenops parnaguae, is a Furnariid bird, which is endemic to the Caatinga region of north-eastern Brazil. It is monotypic within the genus Megaxenops.

Its name refers to the superficial similarities to the "true" xenopses of the genus Xenops. Its bill is similarly up-curved, but with a total legnth of c. 16 cm (6 in), it is noticeably larger and overall bright cinnamon-rufous with a white throat. It is generally inconspicious, typically foraging amongst foliage rather than on trunks.