The 2017–18 Czech Cup, known as the MOL Cup for sponsorship reasons, was the 25th season of the annual knockout football tournament of the Czech Republic.
It began with the preliminary round in July 2017 and is due to end with the final in May 2018.
The winner of the cup will gain the right to play in the group stage of the 2018–19 UEFA Europa League.
54 teams participated in the second round; 11 First League teams (all other than those playing in European competitions) entered the competition at this stage, joining the 43 winners of the first round matches.
32 teams participate in the third round; the final five First League teams entered the competition at this stage (holders FC Fastav Zlín, Slavia Prague, Viktoria Plzeň, Sparta Prague and Mladá Boleslav).