The 2021 Sochi Formula 2 round the sixth round of the 2021 Formula 2 Championship and took place at the Sochi Autodrom from 24 to 25 September.

It ran in support of the 2021 Russian Grand Prix and was planned to feature three races.

However, the second sprint race was cancelled amid bad weather conditions.

This is the first cancelled Formula 2 race since the cancellation of the sprint race during the 2019 Spa-Francorchamps Formula 2 round due to Anthoine Hubert's fatal accident.

The second sprint race was cancelled due to heavy rainfall, which led to postponement of the first races of Formula 2 and Formula 3.