The Premier League (formerly the Superleague) is the top tier men's basketball league in Ireland, with 9 clubs competing in the competition. The current champions are UCC Demons who finished on top of the ladder in 2014–15. The final Superleague champions were the UL Eagles who won in 2012–13, as the league changed its name to Premier League for the 2013–14 season. Neptune hold the record for most championships, having won the competition 11 times.
From 2003–04 to 2011–12, the league was split up into North and South Conferences and the league champion was determined by the team who made it through to and won the grand final. Prior to 2003–04, the league champion was determined by the team won finished on top of the ladder and the runner-up was who finished second on the ladder. An exception is the 2001–02 season, where Waterford Crystal were crowned league champions after finishing first on the ladder despite the league holding a post-season tournament that the Tralee Tigers (finished second on the season) won over Killester (finished fourth on the season) in the final.
In 2012–13, the league reverted back to the old model and removed conferences, re-establishing league champions as the top of the ladder finishers, and established a Champions Trophy tournament for the final two weeks of the season to act as a playoff tournament (similar to the 2001–02 season). From 2012–13 onwards, the team who finishes on top of the ladder is crowned league champion, while for the final two weeks of the season, the top four teams battle it out for the Champions Trophy.
In July 2015, 11-time league champions, Neptune Cork, withdrew from the 2015–16 season following a major loss of player personnel, deciding instead to join the National League Division 1.
On 26 March 2015, Basketball Ireland announced the Premier League's inaugural All-Star awards (not related to the league's annual All-Star Game). The All-Star picks compose of three teams, each with five roster spots. Players are selected with regard to position; they are listed according to position in the following descending order: two guards, two forwards and one center.