The Panoz Esperante GTR-1 was a race car developed by Panoz Auto Development and Reynard Motorsport for grand tourer endurance racing in 1997. Although named after the Panoz Esperante roadster, the GTR-1 actually bore no mechanical relation to the production Esperante, instead sharing only minor styling points. Only two road-legal GTR-1s were built to meet homologation requirements set forth by the ruling bodies which the racing cars ran under.

Panoz is an American manufacturer of luxury sports automobiles founded in 1989 as Panoz Auto Development by Dan Panoz, son of Don Panoz. The company has also been extensively involved in professional racing, and designs, engineers and builds its own race cars. Panoz products have included the Panoz Roadster and AIV Roadster, the Panoz Esperante, and the Panoz Avezzano.