1984–85 was the seventy-second occasion on which the Lancashire Cup completion had been held.

St. Helens won the trophy by beating Wigan by the score of 26–18.

The match was played at Central Park, Wigan, (historically in the county of Lancashire). The attendance was 26,074 and receipts were £6,2139.00

This was the first time in over twenty years that the attendance exceeded 20,000, and it would continue around this level for the next four seasons. The receipts climbed from last year's near-record £13,160.00 to £62,139.

This season the total number of entrants remained at the 16 level.

With this, full sixteen members there was no need for “blank” or “dummy” fixtures or any byes.

^[1][2]

1 * Fulham did not have a home ground for this season and were very nomadic. This match played at Station Road
2 * Wigan won the coin toss for the home advantage after neither they nor St. Helens wanted to play at the chosen venue, Wilderspool, due to the low capacity 3 * Central Park was the home ground of Wigan with a final capacity of 18,000, although the record attendance was 47,747 for Wigan v St Helens 27 March 1959

• 1984–85 Rugby Football League season
• Rugby league county cups