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.

Final
Final were held at Shrewsbury, replay - at Wrexham.