The 1956–57 FAW Welsh Cup is the 70th season of the annual knockout tournament for competitive football teams in Wales.
| Tournament details | |
|---|---|
| Country | Wales |
| Final positions | |
| Champions |  Wrexham |
| Runner-up | Swansea Town |
Key edit
League name pointed after clubs name.
Fifth round edit
Ten winners from the Fourth round and six new clubs.
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Oswestry Town (B&DL) | 0–3 | Chester (FL D3N) |
Sixth round edit
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Cardiff City (FL D1) | 0–2 | Chester (FL D3N) |
Semifinal edit
Swansea Town and Newport County played both matches at Cardiff, Wrexham and Chester played at Rhyl.
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Swansea Town (FL D2) | 1–1 | Newport County (FL D3S) |
| replay | Swansea Town (FL D2) | 3–0 | Newport County (FL D3S) |
| 2 | Wrexham (FL D3N) | 2–0 | Chester (FL D3N) |
Final edit
Final were held at Cardiff.
| Tie no | Home | Score | Away |
|---|---|---|---|
| 1 | Wrexham (FL D3N) | 2–1 | Swansea Town (FL D2) |
