The Wolf W-11 Boredom Fighter is an American single-seat biplane designed by Donald Wolf of Huntington, New York. The aircraft is supplied as plans for amateur construction. The Boredom Fighter is a single-seat biplane designed to resemble a First World War SPAD S.XIII and completed aircraft are often painted in markings from that war. The aircraft is constructed of wood, has fixed conventional landing gear with a tailskid, and the recommended powerplant is the 65 hp (48 kW) Continental A65 piston engine.