We examined 122 specimens of Chrysomus ruficapillus (Vieillot, 1819) from southern Brazil for nasal mites. The mites, Sternostoma strandtmanni Furman, 1957; Ptilonyssus sairae (Castro, 1948); Ptilonyssus icteridius (Strandtmann and Furman, 1956); and Ptilonyssus sp. were identified. Ptilonyssus sairae was the most prevalent (14.8%), and S. strandtmanni had the highest mean infection intensity (5.53). Co-infections occurred in 15 hosts, and P. sairae and P. icteridius were simultaneously present in 11 birds. This is the first record of S. strandtmanni and P. sairae in C. ruficapillus and the southernmost record of P. icteridius in the Americas.