The 1954–55 Rugby Football League season was the sixtieth season of rugby league football.
Warrington won their second Championship when they beat Oldham 7-3 in the play-off final. They also ended the regular season as league leaders.
The Challenge Cup winners were Barrow who beat Workington Town 21-12 in the final.
Blackpool Borough joined the competition.
Warrington won the Lancashire League, and Leeds won the Yorkshire League. Barrow beat Oldham 12–2 to win the Lancashire Cup, and Halifax beat Hull 22–14 to win the Yorkshire Cup.
This was also the first time that there was an all-Cumbrian Final. Barrow beat Workington Town 21-12 in the final played at Wembley before a crowd of 66,513. Captained by former Great Britain skipper Willie Horne, this was Barrow’s first Challenge Cup Final win, although have been runners-up on four other occasions. Jack Grundy, Barrow's Second-row was awarded the Lance Todd Trophy for man-of-the-match.