Stefan "Bear" Rzesnowiecky III (May 10, 1992 – November 28, 2023[1]) was an American professional stock car racing driver who last competed part-time in the ARCA Menards Series West, driving the No.

He would then run select one-off events in the SRL Spears Southwest Tour Series between 2008 and 2010, winning in his first start at the Las Vegas Motor Speedway Bullring in 2008.

He had originally received that ride as a reward for winning the third annual Richard Petty's Driver Search in December of the previous year.

In 2018, Rzesnowiecky would return to the SRL Spears Southwest Tour Series, running one race at the Bullring In Las Vegas, finishing 22nd due to a penalty.

46 Ford for Lowden Jackson Motorsports as a late replacement for Kyle Sieg who was originally on the entry list in that car.