William Alexander Lester III (born February 6, 1961) is an American semi-retired professional racing driver. He last competed part-time in the NASCAR Camping World Truck Series, driving the No. 17 Ford F-150 for David Gilliland Racing. Lester previously competed full-time in the Truck Series from 2002 to midway through 2007. Lester was the NASCAR's only full-time African-American driver during that time. After that, he moved to sports car racing, competing in the Rolex Sports Car Series from 2007 to 2012. Lester had also competed part-time in the same series from 1998 to 2001.