The 1970–71 Lancashire Cup was the fifty-eighth staging of the tournament.
Leigh won the trophy by beating St. Helens by the score of 7–4 in the final.
The match was played at Station Road, Pendlebury, (historically in the county of Lancashire).
[1] Involved 8 matches (with no bye or “blank” fixture) and 16 clubs Involved 1 match and 2 clubs Involved 4 matches (with no bye) and 8 clubs Involved 1 match and 2 clubs Involved 2 matches and 4 clubs [4][7] Scoring - Try = three (3) points - Goal = two (2) points - Drop goal = two (2) points 1 * St Helens Amateurs were a junior (or amateur) club from St Helens 2 * Whitehaven Amateurs are a junior (or amateur) club from Whitehaven 3 * Station Road was the home ground of Swinton from 1929 to 1932 and at its peak was one of the finest rugby league grounds in the country and it boasted a capacity of 60,000.
The actual record attendance was for the Challenge Cup semi-final on 7 April 1951 when 44,621 watched Wigan beat Warrington 3-2