The All-Ireland League is a rugby union competition in Ireland, featuring clubs from both the Republic of Ireland and Northern Ireland. Established in 1990, it serves as a key platform for amateur and semi-professional teams to compete at a high level. The league is divided into several divisions, with promotion and relegation systems in place. The competition is governed by the Irish Rugby Football Union and plays a significant role in developing rugby talent across the country. Clubs participating in the league often have strong local support and contribute to the growth of the sport within their communities.