Spix's woodcreeper (Xiphorhynchus spixii) is a species of bird in the subfamily Dendrocolaptinae of the ovenbird family Furnariidae.

[2] The species' common name and specific epithet commemorate the German naturalist Johann Baptist von Spix (1782-1826).

[5] Spix's woodcreeper is a medium-sized member of its genus, with a longish, slim, slightly decurved bill.

Adults have a dusky brown face with narrow buff streaks and a pale supercilium and eyering.

Their flight feathers, rump, and tail are dark cinnamon to rufous-chestnut with dusky brownish tips on the primaries.

Their breast, sides, and belly are dull olive-brown, with longish dusky-edged buff streaks.

The song of Spix's woodcreeper is a "very high, very fast trill, descending at beginning, level at end, last note higher".

[1] It is considered uncommon to fairly common, but is "[b]elieved to be highly sensitive to loss and fragmentation of forest.