The League of Ireland Men's Premier Division, commonly known as the League of Ireland Premier Division or simply the Premier Division, is a professional association football league in the Republic of Ireland, the top division of the League of Ireland, and the highest level of the Republic of Ireland football league system. It is organised and administrated by the Football Association of Ireland (FAI). Contested by ten clubs, it operates on a system of promotion and relegation with the League of Ireland First Division. Seasons usually run from February to November, with each team playing 36 matches: four against each other team, two home and two away.