The 1978 Mowat Cup was a series played between the winner of the British Columbia Junior Hockey League and the Pacific Coast Junior Hockey League to determine the British Columbia Junior A Champion and the BC seed to the Alberta/British Columbia Junior A Championship.
- Merritt Centennials defeated Richmond Sockeyes 3-games-to-none
- 04/02/78 - Richmond 3 @ Merritt 8
- 04/03/78 - Richmond 2 @ Merritt 9
- 04/05/78 - Merritt 6 @ Richmond 5 OT