| 1947–48 Welsh Cup | |
| Country: | Wales |
| Winners: | Lovell's Athletic |
| Second: | Shrewsbury Town |
| Prev Season: | 1946–47 |
| Next Season: | 1948–49 |
The 1947–48 FAW Welsh Cup is the 61st season of the annual knockout tournament for competitive football teams in Wales.
League name pointed after clubs name.
Six winners from the Fourth round, Llanelly and 13 new clubs.
| width=50 | Tie no | width=250 | Home | width=50 | Score | width=250 | Away |
|---|---|---|---|---|---|---|---|
| 1 | South Liverpool (CCL) | 2–1 | Chester (FL D3N) |
Four winners from the Fifth round. Six other clubs get a bye to the Seventh round.
Two winners from the Sixth round plus six clubs who get a bye in the previous round.
South Liverpool and Lovell's Athletic played at Shrewsbury, Barry Town and Shrewsbury Town played at Merthyr.
| width=50 | Tie no | width=250 | Home | width=50 | Score | width=250 | Away |
|---|---|---|---|---|---|---|---|
| 1 | South Liverpool (CCL) | 0–1 | Lovell's Athletic (SFL) | ||||
| 2 | Barry Town (SFL) | 1–3 | Shrewsbury Town (ML) |
Final were held at Wrexham.
| width=50 | Tie no | width=250 | Home | width=50 | Score | width=250 | Away |
|---|---|---|---|---|---|---|---|
| 1 | Lovell's Athletic (SFL) | 3–0 | Shrewsbury Town (ML) |