 Dumbarton Harp played the majority of their existence in local football leagues, such as the Glasgow and District Junior League, which they joined in their inaugural season, or the Inter County Football League in season 1916–17.In 1910 they were champions of the Scottish Football Union which they left in 1912 to participate in the Scottish Reserve Football League.They did play for a short spell in the Scottish Football League when it expanded to a three division set up in the 1920s.