The 2018–19 NACAM Formula 4 Championship season was the fourth season of the NACAM Formula 4 Championship.
It began on 26 October 2018 at the Autódromo Hermanos Rodríguez in Mexico City and ended on 4 August 2019 at the same venue after seven rounds.
The first round was held in support of the 2018 Mexican Grand Prix.
[1] Points were awarded to the top 10 classified finishers in each race.
Bold – PoleItalics – Fastest Lap