The Neotropical genus Stylogyne (Myrsinoideae - Primulaceae) is revised for Brazil. Eighteen species occur in this country exclusively in the Atlantic and Amazon forests. Stylogyne incognita, S. lasseri, S. serpentina, and S. spruceana are new records for Brazil. Stylogyne araujoana, S. martiana, S. sordida, S. carautae, S. depauperata, S. leptantha, and S. warmingii were considered threatened species. This paper provides diagnostic descriptions, keys for identification, and maps detailing the distribution of species in Brazil. New synonyms are proposed for S. atra, S. cauliflora, S. nigricans, and S. pauciflora.