The 2019 NASCAR K&N Pro Series West was the sixty-sixth season of the K&N Pro Series West, a regional stock car racing series sanctioned by NASCAR. It began with the Star Nursery 100 at the Las Vegas Motor Speedway dirt track on February 28, 2019 and concluded with the Arizona Lottery 100 at ISM Raceway on November 9, 2019. Derek Kraus was crowned the champion, ahead of Jagger Jones (who also won Rookie of the Year), Hailie Deegan, and Trevor Huddleston. Derek Thorn entered the season as the defending drivers' champion, but did not defend his championship, deciding instead to focus on super late model racing.