1922–23 FAI Cup
The FAI Cup 1922-23 was the second edition of Ireland's premier cup competition, The Football Association of Ireland Challenge Cup or FAI Cup. The tournament began on 6 January 1923 and concluded on 17 March with the final held at Dalymount Park, Dublin. An official attendance of 14,000 people watched Belfast side Alton United of the Falls League defeat Shelbourne 1-0. The Falls League's affiliation to the FAI, rather than the IFA, allowed the club to compete in the cup.
First round
| Tie no | Home team | Score | Away team | Date |
| 1 | Alton United | 4-0 | Midland Athletic | 6 January 1923 |
| refix | Alton United | 5-0 | Midland Athletic | 13 January 1923 |
| 2 | Athlone Town | 1-2 | Shamrock Rovers | 6 January 1923 |
| 3 | Bohemians | 1-2 | Shelbourne United | 6 January 1923 |
| 4 | Fordsons | W.O. | Rathmines Athletic | 6 January 1923 |
| 5 | Jacobs | 4-0 | Pioneers | 6 January 1923 |
| 6 | Olympia | 0-1 | St James's Gate | 6 January 1923 |
| 7 | Shelbourne | 9-0 | Bray Unknowns | 6 January 1923 |
| 8 | Dublin United | 3-3 | Sligo Celtic | 7 January 1923 |
| replay | Sligo Celtic | 0-0 | Dublin United | 14 January 1923 |
| replay | Dublin United | 3-1 | Sligo Celtic | 28 January 1923 |
Second round
| Tie no | Home team | Score | Away team | Date |
| 1 | Shelbourne United | 1-1 | Alton United | 20 January 1923 |
| replay | Alton United | 2-0 | Shelbourne United | 27 January 1923 |
| 2 | St James's Gate | 1-2 | Shelbourne | 20 January 1923 |
| 3 | Shamrock Rovers | 1-2 | Jacobs | 21 January 1923 |
| 4 | Dublin United | 2-3 | Fordsons | 4 February 1923 |
Semi-finals
----Final">1923 FAI Cup Final">Final
| Winner of FAI Cup 1922-23 |
| Alton United 1st Title |