The White-barred Piculet (Picumnus cirratus) is a species of bird in the Picidae family, the woodpeckers, piculets, and wrynecks. It is found in south-eastern Brazil south and west to the Pantanal, and into south-eastern Bolivia, Paraguay and northern Argentina. A disjunct population occurs in the coastal parts of French Guiana, south to the Brazilian state of Amapá and west along the lower Amazon River up to around the Tapajós River. A small, apparently isolated population is found in southern Guyana and adjacent Roraima.
Its natural habitats are subtropical or tropical dry forests, subtropical or tropical moist lowland forests, and heavily degraded former forest.
The taxonomy is difficult, as it hybridizes widely with numerous other piculets such as the Varzea, Ochre-collared and White-wedged Piculet.