| 1963–64 Welsh Cup | |
| Country: | Wales |
| Second: | Bangor City |
| Prev Season: | 1962–63 |
| Next Season: | 1964–65 |
The 1963–64 FAW Welsh Cup is the 77th season of the annual knockout tournament for competitive football teams in Wales.
League name pointed after clubs name.
Ten winners from the Fourth round and six new clubs.
| width=50 | Tie no | width=250 | Home | width=50 | Score | width=250 | Away |
|---|---|---|---|---|---|---|---|
| 1 | Chester (FL D4) | 5–1 | Borough United (WLN) |
| width=50 | Tie no | width=250 | Home | width=50 | Score | width=250 | Away |
|---|---|---|---|---|---|---|---|
| 1 | Cardiff City (FL D2) | 3–1 | Chester (FL D4) |
Newport County and Cardiff City played at Swansea, replay were held it Cardiff, Bangor City and Wrexham played at Chester.
| width=50 | Tie no | width=250 | Home | width=50 | Score | width=250 | Away |
|---|---|---|---|---|---|---|---|
| 1 | Newport County (FL D4) | 2–2 | Cardiff City (FL D2) | ||||
| replay | Cardiff City (FL D2) | 1–0 | Newport County (FL D4) | ||||
| 2 | Bangor City (CCL) | 3–1 | Wrexham (FL D3) |
| width=50 | Tie no | width=250 | Home | width=50 | Score | width=250 | Away |
|---|---|---|---|---|---|---|---|
| 1 | Bangor City (CCL) | 2–0 | Cardiff City (FL D2) | ||||
| Cardiff City (FL D2) | 3–1 | Bangor City (CCL) | |||||
| replay | Cardiff City (FL D2) | 2–0 | Bangor City (CCL) |