The 2004 NASCAR Craftsman Truck Series was the tenth season of the Craftsman Truck Series, the third highest stock car racing series sanctioned by NASCAR in the United States. Bobby Hamilton of Bobby Hamilton Racing won the championship.

The NASCAR Craftsman Truck Series is a pickup truck racing series owned and operated by the National Association for Stock Car Auto Racing (NASCAR), and is the only series in NASCAR to race production pickup truck-based stock cars. The series is one of three national divisions of NASCAR, ranking as the third tier behind the second-tier NASCAR Xfinity Series and the top level NASCAR Cup Series.