The 1950–51 FAW Welsh Cup is the 64th season of the annual knockout tournament for competitive football teams in Wales.
| Tournament details | |
|---|---|
| Country | Wales |
| Final positions | |
| Champions |  Merthyr Tydfil |
| Runner-up | Cardiff City |
Key
editLeague name pointed after clubs name.
Fifth round
editEight winners from the Fourth round and six new clubs.
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Chester (FL D3N) | 2–1 | Rhyl (CCL) |
Sixth round
editSeven winners from the Fifth round plus one new club.
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Merthyr Tydfil (SFL) | 5–2 | Chester (FL D3N) |
Semifinal
editCardiff City and Wrexham played at Shrewsbury, both matches between Newport County and Merthyr Tydfil were held at Cardiff.
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Cardiff City (FL D2) | 1–0 | Wrexham (FL D3N) |
| 2 | Newport County (FL D3S) | 1–1 | Merthyr Tydfil (SFL) |
| replay | Newport County (FL D3S) | 1–4 | Merthyr Tydfil (SFL) |
Final
editFinal and replay were held at Swansea.
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Merthyr Tydfil (SFL) | 1–1 | Cardiff City (FL D2) |
| replay | Merthyr Tydfil (SFL) | 3–2 | Cardiff City (FL D2) |
