The 1929–30 Lancashire Cup was the 22nd occasion on which this regional rugby league competition had been held.
Warrington won the trophy by beating Salford in the final by 15–2.
The match was played at Central Park, Wigan.
The number of teams entering this year's competition remained at 13 which resulted in 3 byes in the first round.
The semi-final clash between Salford and Swinton took two replays to decide.