The Connacht Senior Club Football Championship is an annual Gaelic football tournament played between the seventy-two senior football clubs in Connacht, with one qualifying from each of the five respective county championships. The winners of the Connacht football championship go on to qualify for the All-Ireland Senior Club Football Championship semi-final.
Before the modern series started in 1970, the Craobh Rua club in Sligo organised an "unofficial" annual Connacht Club Championship tournament amongst the champions of Sligo, Mayo, Leitrim, Roscommon and Galway for the prize of the New Ireland Assurance Cup in the 1950s. Tuam Stars, who won 7 Galway titles in a row between 1954 and 1960, were the inaugural winners of the unofficial Connacht Club Championship in 1955 and also won it in 1956, 1957 and 1958. At the 1961 Annual General Meeting of the Castlebar Mitchels club in Mayo, a motion was put forward "that an official Connacht club championship be inaugurated". This met with the response that the Connacht Council would sanction such a competition "but would not take responsibility for it". The motion was subsequently passed at the Mayo County Convention in February 1962 and the competition commenced in April 1962 when Claremorris, who were first-time champions of Mayo, met Galway champions Dunmore McHales. The 1962 Connacht Club championship was not finished in that year due to "poor organisation" but when the final was eventually played on April 28, 1963, Dunmore McHales became the first "official" Connacht Club Champions by defeating Melvin Gaels of Leitrim. This competition was short-lived because it did not have the full support of the Connacht Council and county boards. Castlebar Mitchels again proposed a motion in 1966 to revive the Connacht Club Championship but it was decided to leave it to the respective senior club champions to organise the tournament amongst themselves. Castlebar did indeed organise such a tournament in the late 1960s before the "official" competition got up and running properly from 1970 onwards.