The 2017–18 Russian Cup was the 26th season of the Russian football knockout tournament since the dissolution of Soviet Union.

The competition started on 14 July 2017 and finished on 9 May 2018.

The winners, FC Tosno, could have earned a spot in the 2018–19 UEFA Europa League group stage, but did not obtain the UEFA license and was closed a month later due to financial problems.

FNL clubs entered at this stage (except for FC Zenit-2 Saint Petersburg and FC Spartak-2 Moscow).

Teams from the Premier League entered the competition at this round.