The 2003 LNBP was the 4th season of the Liga Nacional de Baloncesto Profesional, one of the professional basketball leagues of Mexico. It started on July 29, 2003 and ended on December 13, 2003. The league title was won by Panteras de Aguascalientes, which defeated La Ola Roja del Distrito Federal in the championship series, 4–2.