One of 6 (17%) pirate perches, Aphredoderus sayanus, from Spring Creek, Independence County, Arkansas, was found to harbor in its small intestine a single proteocephalid tapeworm, Proteocephalus pearsei LaRue, 1919. This tapeworm has been reported previously from a variety of fish hosts, including those belonging to the families Centrarchidae, Cottidae, Gadidae, Moronidae, Percidae, Salmonidae, and Sciaenidae. The documented range of P. pearsei includes 6 northern states (Michigan, Minnesota, New York, Ohio, Pennsylvania, and Wisconsin), 2 Canadian provinces (Manitoba, Ontario), and the Great Lakes. We report a new host record and, for the first time, P. pearsei from Arkansas.