The 1988 Allan Cup was the Canadian senior ice hockey championship for the 1987–88 senior "AAA" season. The event was hosted by the Thunder Bay Twins in Thunder Bay, Ontario. The 1988 playoff marked the 80th time that the Allan Cup has been awarded.
Thunder Bay Twins 7 - Charlottetown Islanders 4
Thunder Bay Twins 10 - Charlottetown Islanders 2
Thunder Bay Twins 9 - Charlottetown Islanders 3
Thunder Bay Twins 7 - Charlottetown Islanders 1