Lancaster RFC was a semi-professional rugby league club based in Lancaster, Lancashire, England.
The club first became members of the Northern Rugby Football Union (now Rugby Football League) in 1897, and joined the semi-professional ranks in the Lancashire Senior Competition in 1901–02. They played in the 2nd Division for the following three seasons. At the end of season 1904–05 the club left the league. The club folded (or as described in news article - was ‘dissolved’) shortly afterwards.
The original Lancaster RFC was formed in 1870. The club, along with Morecambe Bay neighbours Barrow, Ulverston and Millom joined the Northern Union in 1897, forming a 'North West Rugby League'. Around the turn of the century there were seven Northern Union clubs in and around the city.
During the early years the club had two prominent players who gained international caps. These were: "Gentleman" Jim Leytham, who joined Lancaster RFC in 1897, and John Pinch.
Lancaster joined the ranks of the semi-professionals for the start of the 1901–02 season when they became members of the Northern Union. During that season they played in the Lancashire Senior Competition finishing in 10th position out of 17.
At the end of the 1901–02 season, the County Leagues elected 18 teams to join the new Division 2 (7 from Lancashire and 10 from Yorkshire and new member South Shields) with the existing second competition scrapped.