The 2005 NASCAR Craftsman Truck Series was the eleventh season of the Craftsman Truck Series, the third highest stock car racing series sanctioned by NASCAR in the United States. Ted Musgrave of Ultra Motorsports was crowned the season's champion.
A rule change affected the qualification process in 2005. The top 30 teams in the owners' standings at the end of the 2004 season saw their drivers qualify automatically for the first four races of the season, provided they attempted all races in the previous year. However, only 29 teams met the criteria, so at the start of the season, one additional spot was available for the remaining teams on the entry list. After the fourth race, current standings were used to determine the teams guaranteed to have their drivers in the field.