The 2019 FIA Formula 2 Championship was the fifty-third season of the second-tier of Formula One feeder championship and also third season under the moniker of FIA Formula 2 Championship, a motor racing championship for Formula 2 cars that is sanctioned by the Fédération Internationale de l'Automobile (FIA). It is an open-wheel racing category that serves as the second tier of formula racing in the FIA Global Pathway. The category was run in support of the 2019 FIA Formula 1 World Championship.

The FIA Formula 2 Championship is a second-tier single-seater championship organized by the Fédération Internationale de l'Automobile (FIA). Held on racing circuits, the championship was introduced in 2017, following the rebranding of the long-term Formula One feeder series GP2. The series' original founders were Flavio Briatore and current managing director Bruno Michel.