1983–84 Lancashire Cup

The 1983–84 Lancashire Cup, known as the Burtonwood Brewery Lancashire Cup for sponsorship reasons, was the 71st occasion on which the Lancashire Cup competition had been held.

It was won by Barrow, who beat Widnes 12–8 in the final at Central Park, Wigan.

Background
This season saw no new clubs and no withdrawals, leaving the total number of entrants at the 16 level. With this full sixteen members there was no need for "blank" or "dummy" fixtures or any byes.

First round
Involved 8 matches (with no byes) and 16 clubs

Second round
Involved 4 matches and 8 clubs

Semi-finals
Involved 2 matches and 4 clubs