Trichinellosis is one of the most frequent parasitic disease in Poland. Up to now, all animal and human trichinellosis infections in Poland have been considered to be caused by Trichinella spiralis in spite of only few isolates from humans and swine have been identified so far. From November 1994 to February 1995, 112 mammals belonging to 9 species were examined to detect Trichinella infection, and to identify the etiological agent at the species level. Muscle larvae of Trichinella sp. were isolated from 3 (27%) red foxes (Vulpes vulpes), 3 (13%) common shrews (Sorex araneus), and from 2 (20%) pygmy shrews (Sorex minutus). Only larvae from foxes have been identified by random amplified polymorphic DNA analysis as T. spiralis and T. britovi in one and two animals, respectively. As far as we know, this is the first report of T. britovi in Poland.