The Michael Byrne Cup is an association football cup competition featuring teams from the Galway & District League. It is now the main league cup competition for this league. However, when it was originally inaugurated in 1976–77, it was a play-off featuring the top teams from the four junior leagues affiliated to the Connacht Football Association. These are the Galway & District League, the Sligo-Leitrim League, the Mayo Association Football League and the Roscommon & District League. The winners were recognised as the Connacht junior champions and the cup was also referred to as the Connacht Champions Cup.

List of winners