1928–29 Welsh Cup
The 1928–29 FAW Welsh Cup is the 48th season of the annual knockout tournament for competitive football teams in Wales.
Key
League name pointed after clubs name.- B&DL - Birmingham & District League
- CCL - Cheshire County League
- FL D1 - Football League First Division
- FL D3N - Football League Third Division North
- FL D3S - Football League Third Division South
- SFL - Southern Football League
- WLN - Welsh League North
- WLS - Welsh League South
Fifth round
Eight winners from the Fourth round and eight new clubs.Semifinal
Both semifinals were held at Rhyl.| Tie no | Home | Score | Away |
| 1 | Connah's Quay & Shotton | 7–0 | Merthyr Town |
| 2 | Rhyl | 1–2 | Cardiff City |
Final
Final were held at Shrewsbury, replay - at Wrexham.| Tie no | Home | Score | Away |
| 1 | Connah's Quay & Shotton | 3–0 | Cardiff City |