Scattered information on the parasitic fauna of Canadian fishes is consolidated in parasite host and host parasite lists. 830 names species are reported. The parasite host list is organized on a taxonomic basis and identifies freshwater, marine and brackish habitats, locations in hosts, known geographic distribution in Canadian waters, published source of each host and locality recorded. The host parasite list is organized according to the taxonomy of the hosts and an index to parasites and hosts is included.