1956–57 Welsh Cup

The 1956–57 FAW Welsh Cup is the 70th 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 D2 - Football League Second Division
 * FL D3N - Football League Third Division North
 * FL D3S - Football League Third Division South
 * SFL - Southern Football League

Fifth round
Ten winners from the Fourth round and six new clubs.

Semifinal
Swansea Town and Newport County played both matches at Cardiff, Wrexham and Chester played at Rhyl.

Final
Final were held at Cardiff.