League of Ireland Premier Division
The League of Ireland Premier Division, also known as the SSE Airtricity League Premier Division, is the top level division in both the League of Ireland and the Republic of Ireland football league system. The division was formed in 1985 following a reorganisation of the League of Ireland. St. Patrick's Athletic and Bohemians are the only current League of Ireland clubs never to have been relegated from the Premier Division. Since 2003 the Premier Division has operated as a summer league.
History
1980s
The inaugural members of the Premier Division included the League of Ireland's traditional top four clubs – Shamrock Rovers, Shelbourne, Bohemians and Dundalk plus eight other clubs. Shamrock Rovers were the inaugural champions and then retained the title in 1986–87. This saw Rovers complete a four in a row of league titles. Dundalk were champions in 1987–88 and Derry City achieved a treble in 1988–89 by also winning the League of Ireland Cup and the FAI Cup.1990s
The 1990s saw the re-emergence of St Patrick's Athletic following years of obscurity. During the decade St Pat's won four titles. Brian Kerr guided the club to success in 1989–90 and 1995–96 before Pat Dolan and Liam Buckley added further titles in 1997–98 and 1998–99. The 1992–93 season saw Cork City win their first title in dramatic circumstances after a series of three-way play-offs that also involved Bohemians and Shelbourne.2000s
The turn of the century saw Shelbourne win the first of five titles in seven years.Dermot Keely guided Shelbourne to the title in 1999–2000 and 2001–02. Shelbourne won the title in controversial circumstances in 2001–02. They were only declared champions after St Patrick's Athletic were deducted 15 points for fielding Charles Livingstone Mbabazi while he was ineligible.
The league decided to become a summer league in 2003. Pat Fenlon added further titles in 2003, 2004 and 2006. Fenlon had also been a prominent member of the Shelbourne playing squads in 1999–2000 and 2001–02. As a manager Fenlon would also guide Bohemians to title successes in 2008 and 2009. Cork City denied Shelbourne a third league title in a row when they claimed their second title in 2005, defeating fellow challengers Derry City in a last game decider at Turners Cross.
During the second half of the decade a number of Premier Division clubs suffered financial difficulties. During the 2005 season Shamrock Rovers entered into examinership and it was revealed that the club had debts of nearly €3 million. It was also discovered that Rovers were not paying PAYE and PRSI taxes. As a result of these financial irregularities, Rovers were deducted eight points. This ultimately resulted in the club being relegated to the First Division after they lost the relegation/promotion playoff to Dublin City. This was the first time Rovers' senior team had dropped out of the top level of the Republic of Ireland football league system since the club had joined the League of Ireland in 1922–23. During the 2006 season the Revenue Commissioners took High Court action and threatened to have Shelbourne wound up after the club failed to pay more than €104,000 in outstanding taxes. Shelbourne also struggled to pay its players during the season. Despite winning the title Shelbourne were subsequently demoted to the First Division due to their financial difficulties. Midway through the season Dublin City also went out of business and withdrew from the league, unable to complete the season. During the 2008 season both Cork City and Drogheda United were deducted ten points after going into administration. Following the conclusion of the 2009 season both Derry City and Cork City were expelled from the League of Ireland. Derry City were accused of making extra payments to players using unofficial secondary contracts. This was against league rules which placed limits on the amount clubs could spend on players' wages. Cork City had been in serious financial difficulties for several seasons and its holding company was eventually wound up by the High Court. However both clubs were effectively reformed and were subsequently allowed to join the 2010 First Division.
2010s
The 2010s have been one of contrasting fortunes for Premier Division clubs. Under Michael O'Neill, Shamrock Rovers finished as Premier Division champions in 2010 and 2011. In 2011 Rovers also created history when they became the first team in League of Ireland history to qualify for the group stages of the UEFA Europa League. In 2012 Sligo Rovers won their first Premier Division title and their first top level title in thirty five years. St. Patrick's Athletic won their fifth Premier Division in 2013. Under Stephen Kenny, Dundalk emulated Shamrock Rovers, winning the title in 2014 and 2015 titles before qualifying for the group stages of the 2016–17 UEFA Europa League.In contrast three Premier Division clubs – Sporting Fingal, Galway United and Monaghan United – all withdrew from the League of Ireland. Sporting Fingal also went out of business completely.
Europe
The top team in the Premier Division currently qualifies for the UEFA Champions League second qualifying round. The second-placed and third placed-teams and winners of the FAI Cup qualify for the UEFA Europa League first qualifying round. Shamrock Rovers and Dundalk have both qualified for the group stages of the UEFA Europa League. In 2011, Rovers became the first team in League of Ireland history to reach the group stages and Dundalk repeated the feat in 2016. In 2018, UEFA changed the structure of qualification for the Champions League; giving an extra four automatic qualification spots to the top four leagues in Europe. To compensate for that change, an extra round was added to the qualifying stages of the Champions League and the Europa League which made qualification more difficult for League of Ireland clubs. In 2021, the league will have its Europa League qualifying places revoked and replaced by Europa Conference League places as part of UEFA's restructuring of European football.The League of Ireland Premier Division's UEFA coefficient accumulates to a total value of 5.125 as of September 2013. Between 1998 and 2010, the league's place on the coefficient table rose 15 places, the biggest climb of any league in Europe. Its position of 29th in 2010 was also its highest since 1986. Since June 2010, the league's ranking has declined and it stood at 43rd place at the end of the 2013/2014 season, a drop of 14 places since 2010 and the league's worst ranking since 1998. In the 2000s, the Premier Division's coefficient vastly improved relative to the late 1990s, but at a cost. The introduction of full-time professional football by a number of clubs and the league's decision to become a summer league in 2003, improved the performance of Premier Division clubs in Europe. Increased fitness levels resulted from both, while full-time professionalism retained Irish players within the league, attracted foreign players to the league and generally improved the standard of football. At least one League of Ireland club has progressed to the next round of a European competition in every season from 2003 to 2014.
However, the costs associated with professional football and the pursuit of European success have been blamed for the financial difficulties suffered by Premier Division clubs. This period of improvement came to an end in 2010 with the league's ranking dropping. From 29th in 2010, it dropped to 31st in 2011, 33rd in 2012, 36th in 2013 and 43rd for the 2014 rankings. The league recovered to 40th for the 2015 rankings and finished 41st in the 2016 rankings.
Promotion and relegation
A promotion and relegation system has existed between the League of Ireland Premier Division and the League of Ireland First Division since 1985–86. In 1992–93 a promotion/relegation play-off was also introduced. In 2008 Cobh Ramblers were relegated directly from the Premier Division to the 2009 A Championship after they failed to obtain a First Division license. In 2017, to even up the numbers of clubs in the Premier Division and First Division, the bottom three Premier League teams were relegated and only the First Division champion were promoted. For 2018, this leaves each division with 10 teams, as opposed to 12 in the Premier Division and 8 in First Division previously. In 2018 the bottom team will be relegated and the ninth-placed team will take part in a relegation play-off.2020 clubs
List of winners by season
List of winners by club
Managers
List of wins by manager
| Club | Titles | Seasons |
 Stephen Kenny | 5 | 2002–03, 2014, 2015, 2016, 2018 |
| Pat Fenlon | 5 | 2003, 2004, 2006, 2008, 2009 |
| Dermot Keely | 4 | 1986–87, 1994–95, 1999–00, 2001-02 |
 Jim McLaughlin | 3 | 1985–86, 1988–89, 1991–92 |
| Liam Buckley | 2 | 1998–99, 2013 |
| Michael O'Neill | 2 | 2010, 2011 |
| Brian Kerr | 2 | 1989–90, 1995–96 |
| Turlough O'Connor | 2 | 1987–88, 1990–91 |
| Pat Dolan | 1 | 1997–98 |
| Vinny Perth | 1 | 2019 |
| John Caulfield | 1 | 2017 |
 Ian Baraclough | 1 | 2012 |
| Paul Doolin | 1 | 2007 |
| Damien Richardson | 1 | 2005 |
| Roddy Collins | 1 | 2000–01 |
| Felix Healy | 1 | 1996–97 |
| Ray Treacy | 1 | 1993–94 |
| Noel O'Mahony | 1 | 1992–93 |
Current managers
The Premier Division's longest current reigning manager is Ollie Horgan, who has remained in his position at Finn Harps since March 2014.| Name | Club | Appointed | |
| Ollie Horgan | Finn Harps | 01 03 2014 | |
| Keith Long | Bohemians | 30 10 2014 | |
| Stephen Bradley | Shamrock Rovers | 01 11 2016 | |
| Alan Reynolds | Waterford | 02 01 2017 | |
| Liam Buckley | Sligo Rovers | 6 10 2018 | |
| Ian Morris | Shelbourne | 06 11 2018 | |
| Declan Devine | Derry City | 12 11 2018 | |
| Vinny Perth | Dundalk | 01 01 2019 | |
| Neale Fenn | Cork City | 26 08 2019 | |
| Stephen O'Donnell | St Patrick's Athletic | 31 08 2019 |
Top scorers
Player of the Year
| Year | Player | Club |
| 2019 |  Jack Byrne | Shamrock Rovers |
| 2018 | Michael Duffy | Dundalk |
| 2017 |  Sean Maguire | Cork City |
| 2016 | Daryl Horgan | Dundalk |
| 2015 | Richie Towell | Dundalk |
| 2014 | Christy Fagan | St Patrick's Athletic |
| 2013 | Killian Brennan | St Patrick's Athletic |
| 2012 | Mark Quigley | Sligo Rovers |
| 2011 |  Éamon Zayed | Derry City |
| 2010 | Richie Ryan | Sligo Rovers |
| 2009 |  Gary Twigg | Shamrock Rovers |
| 2008 | Keith Fahey | St. Patrick's Athletic |
| 2007 | Brian Shelley | Drogheda United |
| 2006 |  Joseph N'Do | Shelbourne |
| 2005 | Mark Farren | Derry City |
| 2004 | Jason Byrne | Shelbourne |
| 2003 | Jason Byrne | Shelbourne |
| 2003 | Glen Crowe | Bohemians |
| 2002 | Owen Heary | Shelbourne |
| 2001 | Glen Crowe | Bohemians |
| 2000 | Pat Fenlon | Shelbourne |
| 1999 | Paul Osam | St. Patrick's Athletic |
| 1998 | Pat Scully | Shelbourne |
| 1997 | Peter Hutton | Derry City |
| 1996 | Eddie Gormley | St. Patrick's Athletic |
| 1995 | Liam Coyle | Derry City |
| 1994 | Stephen Geoghegan | Shamrock Rovers |
| 1993 | Donal O'Brien | Derry City |
| 1992 | Pat Fenlon | Bohemians |
| 1991 | Pat Morley | Cork City |
| 1990 | Mark Ennis | St. Patrick's Athletic |
| 1989 | Paul Doolin | Derry City |
| 1988 | Paddy Dillon | St. Patrick's Athletic |
| 1987 | Mick Byrne | Shamrock Rovers |
| 1986 | Paul Doolin | Shamrock Rovers |
Trophy
The current League of Ireland trophy was unveiled on 31 October 2007 by the Football Association of Ireland. It stands at 91 cm tall with a circumference of 83 cm. It is a Sterling Silver trophy consisting of silver and a mass of other metals including copper. The design of the trophy consists of a silver football at the top, which is encompassed by the cup itself. Drogheda United were the first team to receive the newly created trophy on 2 November 2007.Sponsorship
The Premier Division has been sponsored since the early 1990s. The sponsor has been able to determine the league's sponsorship name. There have been three sponsors since the league's formation.- 1990's: Bord Gáis
- 2000–2008: Eircom
- 2010–present: SSE Airtricity