The 2021 Rostelecom Cup was the sixth event in the 2021–22 ISU Grand Prix of Figure Skating, a senior-level international invitational competition series.

It was held at the Iceberg Skating Palace in Sochi on 26–28 November.

Skaters earned points toward qualifying for the 2021–22 Grand Prix Final.

The event was originally scheduled to be held at its traditional location of Megasport Sport Palace in Moscow, but was relocated in June after the International Ice Hockey Federation adjusted the rink size at the Megasport.

[1] The International Skating Union announced the preliminary assignments on 29 June 2021.