The 2007 NASCAR Busch Series was the twenty-sixth season of the NASCAR Busch Series. It began on February 17 with the Orbitz 300 at Daytona International Speedway and concluded on November 17 with the Ford 300 at Homestead-Miami Speedway. Carl Edwards clinched the Busch Series championship on November 3 during the O'Reilly Challenge with 2 races remaining. The 2007 season was the final season of the series under Anheuser-Busch's sponsorship. In 2008 the Busch Series became the NASCAR Nationwide Series sponsored by insurance company Nationwide Insurance with a $70 million contract for 7 years.
The domination of the series by the Busch Whackers continued in 2007. In the first 28 races, only two drivers not with regular Nextel Cup Series schedules drove their cars to victory from start to finish: Stephen Leicht (Meijer 300, Kentucky Speedway) and Jason Leffler (Kroger 200, O'Reilly Raceway Park). A third, Aric Almirola was the official winner of the AT&T 250 at the Milwaukee Mile; Almirola qualified the car for Denny Hamlin, who was racing at Sonoma in the Cup Series and was not scheduled to start, but was forced to as Hamlin was delayed in returning from Sonoma. Hamlin was placed in the car after arriving and drove nearly the entire race, winning, but he failed to receive credit because he failed to start.