The 2019 Gander RV 400 was a Monster Energy NASCAR Cup Series race held on May 6, 2019, at Dover International Speedway in Dover, Delaware. Contested over 400 laps on the 1-mile (1.6 km) concrete speedway, it was the 11th race of the 2019 Monster Energy NASCAR Cup Series season. The race was postponed from Sunday, May 5 to Monday, May 6 due to rain.

Dover Motor Speedway is a race track in Dover, Delaware. The track has hosted at least one NASCAR Cup Series race each year since 1969, including two per year from 1971 to 2020. In addition to NASCAR, the track also hosted USAC and the Indy Racing League. The track features one layout, a 1.03 mi (1.66 km) concrete oval, with 24° banking in the turns and 9° banking on the straights. The speedway is owned and operated by Speedway Motorsports.