William Darrell "Bubba" Wallace Jr. (born October 8, 1993) is an American professional stock car racing driver.

He competes full-time in the NASCAR Cup Series, driving the No. 23 Toyota Camry for 23XI Racing. Wallace was previously a development driver in Toyota's driver development program where he drove part-time for Joe Gibbs Racing in the Xfinity Series and full-time for Kyle Busch Motorsports in the Camping World Truck Series.