This study describes the parasite communities of the fish Notothenia rossii Richardson, 1844 at two Antarctic localities, the Northern Peninsula Antarctic Area (NPA), and Greenwich Island (IGR). In addition, data from Muñoz and Rebolledo (2018) collected from a third locality, King George Island (IRJ). Abundance and species richness of parasite infra-communities, and parasite composition were compared between these three localities. Total length of hosts was included in the analyses. Nineteen parasite species were found in N. rossii at NPA and IGR. Most of the species had already been recorded in IRJ. The acanthocephalans Metacanthocephalus johnstoni Zdzitowiecki, 1983 and Aspersentis megarhynchus (von Linstow, 1892), and the digeneans of Macvicaria spp. were the most prevalent and dominant species at different localities, IRJ, NPA and IGR, respectively. Infra-community parasite abundan...