The 2018 Monte Carlo Formula 2 round was a pair of motor races for Formula 2 cars that took place on 25 and 26 May 2018 at the Circuit de Monaco in Monte-Carlo, Monaco as part of the FIA Formula 2 Championship.

It was the fourth round of the 2018 FIA Formula 2 Championship and ran in support of the 2018 Monaco Grand Prix.

[1] For qualifying, the field was split into two groups due to the short nature of the circuit.