The 2018 BUBBA Burger Sports Car Grand Prix was a sports car race sanctioned by the International Motor Sports Association (IMSA). It was held at Long Beach street circuit in Long Beach, California on 14 April 2018. The race was the third round of the 2018 WeatherTech SportsCar Championship. The overall race was won by the #5 Action Express Racing team of João Barbosa and Filipe Albuquerque, the duo's second win of the season. In GTLM, Oliver Gavin and Tommy Milner won for Corvette Racing, their second consecutive victory at the event.