The 1948–49 FAW Welsh Cup is the 62nd season of the annual knockout tournament for competitive football teams in Wales.
| Tournament details | |
|---|---|
| Country | Wales |
| Final positions | |
| Champions |  Merthyr Tydfil |
| Runner-up | Swansea Town |
Key
editLeague name pointed after clubs name.
Fifth round
editEight winners from the Fourth round and ten new clubs.
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Chester (FL D3N) | 0–6 | Wrexham (FL D3N) |
Sixth round
editTwo winners from the Fifth round. Seven other clubs get a bye to the Seventh round.
Seventh round
editOne winner from the Sixth round plus seven clubs who get a bye in the previous round.
Semifinal
editSwansea Town and Rhyl played at Wrexham, Cardiff City and Merthyr Tydfil played at Swansea.
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Swansea Town (FL D3S) | 3–0 | Rhyl (CCL) |
| 2 | Cardiff City (FL D2) | 1–3 | Merthyr Tydfil (SFL) |
Final
editFinal were held at Cardiff.
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Merthyr Tydfil (SFL) | 2–0 | Swansea Town (FL D3S) |
