Liam O'Neill (born 1947) is an Irish former Gaelic footballer who played as a right wing-back for the Galway senior team. O'Neill joined the team during the late 1960s and was a regular member of the starting fifteen for almost a decade. During that time he won six Connacht medals and one All-Star award. He is a member of a unique set of Galway players who lost three All-Ireland finals in four years O'Neill had a lengthy club career with St Grellan's. He went on to manage the Mayo county football team in later years and his son Kevin played inter-county football for Mayo.