[1] The winners of the cup, Slovan Bratislava, earned a place in the 2018–19 Europa League and would have joined the competition in the first qualifying round.
[2] Slovan Bratislava were the defending champions having won the previous season's Cup by defeating MFK Skalica in the final by a score of 3–0.
[3] The Cup this season was a knockout tournament contested between 208 clubs.
Matches which were level after regulation advanced to penalties to determine a winner.
[6] Sixteen matches in the fourth round were played from 27 September 2017 to 4 October 2017.