| 2023-01-20 19:45:20January 20, 2023 | Dundalk FC 0-0 Finn Harps | 0 - 0 | Friendly, League of Ireland | 2023 League of Ireland | | Match Report |
| 2023-01-27 14:00:37January 27, 2023 | Cork City 0-1 Dundalk FC | 0 - 1 | Friendly, League of Ireland | 2023 League of Ireland | | Match Report |
| 2023-02-03 19:45:12February 3, 2023 | Drogheda United 0-0 Dundalk FC | 0 - 0 | Jim Malone Cup, League of Ireland | 2023 League of Ireland | | Match Report |
| 2023-02-07 19:45:02February 7, 2023 | Dundalk FC 3-1 Wexford FC | 3 - 1 | Friendly, League of Ireland | 2023 League of Ireland | | Match Report |
| 2023-02-17 19:45:39February 17, 2023 | Dundalk FC v UCD | 1 - 1 | League of Ireland, Premier Division | 2023 League of Ireland | | Match Report |
| 2023-02-24 19:45:00February 24, 2023 | Bohemians v Dundalk FC | 2 - 1 | League of Ireland | 2023 League of Ireland | | Match Report |
| 2023-03-03 19:45:00March 3, 2023 | Dundalk FC 5-0 St Patrick's Athletic | 5 - 0 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-03-06 19:45:00March 6, 2023 | Dundalk FC 2-1 Shelbourne | 2 - 1 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-03-10 19:45:00March 10, 2023 | Derry City 0-0 Dundalk FC | 0 - 0 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-03-16 19:45:00March 16, 2023 | Drogheda United 0-1 Dundalk FC | 0 - 1 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-03-24 19:45:49March 24, 2023 | Dundalk FC 0-4 Shelbourne | 0 - 4 | Leinster Senior Cup | 2023 League of Ireland | | Match Report |
| 2023-03-31 19:45:00March 31, 2023 | Dundalk FC 0-4 Shamrock Rovers | 0 - 4 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-04-07 19:45:00April 7, 2023 | Dundalk FC 1-2 Sligo Rovers | 1 - 2 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-04-10 17:00:00April 10, 2023 | Cork City 1-0 Dundalk FC | 1 - 0 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-04-16 15:00:00April 16, 2023 | Dundalk FC 2-2 Derry City | 2 - 2 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-04-21 19:45:00April 21, 2023 | Shelbourne 1-1 Dundalk FC | 1 - 1 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-04-28 19:45:00April 28, 2023 | Dundalk FC 3-2 Drogheda United | 3 - 2 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-05-01 17:00:00May 1, 2023 | UCD 0-2 Dundalk FC | 0 - 2 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-05-06 19:45:00May 6, 2023 | Sligo Rovers 0-1 Dundalk FC | 0 - 1 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-05-12 19:45:00May 12, 2023 | Dundalk FC 2-1 Cork City | 2 - 1 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-05-15 19:45:00May 15, 2023 | Derry City 3-0 Dundalk FC | 3 - 0 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-05-19 19:45:00May 19, 2023 | Dundalk FC 2-2 Bohemians | 2 - 2 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-05-26 19:45:00May 26, 2023 | St Patrick’s Athletic 2-1 Dundalk FC | 2 - 1 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-06-02 19:45:00June 2, 2023 | Shamrock Rovers 2-0 Dundalk FC | 2 - 0 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-06-05 17:00:00June 5, 2023 | Dundalk FC 4-1 UCD | 4 - 1 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-06-09 19:45:00June 9, 2023 | Cork City 1-2 Dundalk FC | 1 - 2 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-06-23 19:45:00June 23, 2023 | Drogheda United 1-2 Dundalk FC | 1 - 2 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-06-26 19:45:00June 26, 2023 | Dundalk FC 1-1 St Patrick's Athletic | 1 - 1 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-06-30 19:45:00June 30, 2023 | Dundalk FC 2-0 Shamrock Rovers | 2 - 0 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-07-07 19:45:00July 7, 2023 | Bohemians 3-2 Dundalk FC | 3 - 2 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-07-13 17:00:26July 13, 2023 | FCB Magpies 0-0 Dundalk FC | 0 - 0 | UEFA Europa Conference | 2023 League of Ireland | | Match Report |
| 2023-07-20 19:45:18July 20, 2023 | Dundalk FC 3-1 FCB Magpies | 3 - 1 | UEFA Europa Conference | 2023 League of Ireland | | Match Report |
| 2023-07-23 17:00:37July 23, 2023 | Dundalk FC 1-0 Shamrock Rovers | 1 - 0 | FAI Cup | 2023 League of Ireland | | Match Report |
| 2023-07-27 19:00:58July 27, 2023 | KA Akureyri 3-1 Dundalk FC | 3 - 1 | UEFA Europa Conference | 2023 League of Ireland | | Match Report |
| 2023-08-03 19:45:37August 3, 2023 | Dundalk FC 2-2 KA Akureyri | 2 - 2 | UEFA Europa Conference | 2023 League of Ireland | | Match Report |
| 2023-08-06 17:00:00August 6, 2023 | Dundalk FC 1-1 Shelbourne | 1 - 1 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-08-11 19:45:00August 11, 2023 | Dundalk FC 1-0 Sligo Rovers | 1 - 0 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-08-18 19:45:58August 18, 2023 | Bray Wanderers 0-1 Dundalk FC | 0 - 1 | FAI Cup | 2023 League of Ireland | | Match Report |
| 2023-08-25 19:45:00August 25, 2023 | Shamrock Rovers 1-0 Dundalk FC | 1 - 0 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-09-01 19:45:00September 1, 2023 | Dundalk FC 1-3 Derry City | 1 - 3 | Premier Division | 2023 League of Ireland | | Match Report |
| 2023-09-15 19:45:48September 15, 2023 | Galway United 4-0 Dundalk FC | 4 - 0 | FAI Cup | 2023 League of Ireland | | Match Report |
| 2023-09-22 19:45:00September 22, 2023 | St Patrick’s Athletic 3-1 Dundalk FC | 3 - 1 | Premier Division | 2023 League of Ireland | | Match Report |
