2017 FAI Cup
The 2017 FAI Senior Challenge Cup was the 97th season of the knockout national Football competition of Ireland. The winners of this season's cup earned a place in the 2018–19 Europa League and would have entered in the first qualifying round.
Cork City were the defending champions and went on to retain the cup after a 5-3 win on penalties against Dundalk in the final on 5 November.
The tournament began the weekend of 30 April 2017 with the preliminary round, which was contested by sixteen non-league clubs.
Teams
| Round | Clubs remaining | Clubs involved | Winners from previous round | New entries this round | Leagues entering at this round |
| Preliminary round | 40 | 16 | N/A | 16 | Leinster Senior League Munster Senior League Best Western Southern Hotel Super League |
| First round | 32 | 32 | 8 | 24 | League of Ireland Leinster Senior League |
| Second round | 16 | 16 | 16 | none | none |
| Quarter-Finals | 8 | 8 | 8 | none | none |
| Semi-Finals | 4 | 4 | 4 | none | none |
| Final | 2 | 2 | 2 | none | none |