The 2015 NASCAR K&N Pro Series East is the 29th season of the K&N Pro Series East. It began with the Hart to Heart Breast Cancer Foundation 150 at New Smyrna Speedway on February 15 and ended with the Drive Sober 125 at Dover International Speedway on October 3. Ben Rhodes enters the season as the defending Drivers' Champion. William Byron won the championship, fifteen points in front of Scott Heckert. All of the races in the 2015 season were televised on NBCSN on a tape delay basis.

The ARCA Menards Series East is a regional stock car racing series owned and operated by the Automobile Racing Club of America (ARCA) and the National Association for Stock Car Auto Racing (NASCAR).