Kyle Thomas Busch (born May 2, 1985) is an American NASCAR driver and team owner. He currently drives the No. 18 Mars, Inc./Interstate Batteries Toyota Camry for Joe Gibbs Racing in the Sprint Cup Series and owns Kyle Busch Motorsports, which runs the #54 Toyota Camry for Kyle and his brother Kurt in the Nationwide Series and the #18 Toyota Tundra for Jason Leffler in the Camping World Truck Series.
He currently holds the modern-era record for most race wins in a season across the top three NASCAR series with twenty-four wins, which he accomplished in 2010. On August 21, 2010, Busch became the first driver to win in all three of NASCAR's top three touring series in the same weekend (Bristol). Busch also holds the record for the most NASCAR Nationwide Series wins with 51, surpassing Mark Martin's 49.
Busch is also the only active driver to win on his birthday and the second overall, winning the 2009 Crown Royal Presents the Russell Friedman 400 at Richmond International Raceway, which was run on his 24th birthday. Cale Yarborough was the first. He is the younger brother of 2004 Nextel Cup Series champion Kurt Busch. Although he has yet to win a title, Busch is viewed by many as a championship-caliber driver.