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. The matches were played on 20 and 21 September 2017.
The matches were played on 25 October 2017.
The matches were played on 27 February, 28 February and 4 April 2018.
The matches were played on 18 April 2018.
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