| Season: | 2005–06 |
| Dates: | 29 July 2005 – 7 May 2006 |
| Matches: | 228 |
| Total Goals: | 644 |
| League Topscorer: | Kris Boyd (32) |
| Nextseason: | 2006–07 |
The 2005–06 Scottish Premier League was won by Celtic, with a 17-point margin over their nearest challengers Hearts in the first season under the management of Gordon Strachan. Rangers, who finished third, failed to finish a Scottish top flight campaign as champions or runners-up for the first time since 1988.
As league champions, Celtic qualified for the UEFA Champions League, with runners-up Hearts also qualifying. This marked the first time since 1995 that a club outside the Old Firm of Celtic and Rangers finished in the top two. Third-placed Rangers qualified for the UEFA Cup, as did Scottish Second Division champions Gretna, who took the Scottish Cup place despite losing the final to Hearts.
Livingston were relegated, and Scottish First Division winners St Mirren were promoted.
Kris Boyd was the top scorer with 32 goals (17 for Rangers after 15 for Kilmarnock).
Promoted from First Division to Premier League
Relegated from Premier League to First Division
| Aberdeen | Celtic | Dundee United | Falkirk | |
|---|---|---|---|---|
| Pittodrie Stadium | Celtic Park | Tannadice Park | Falkirk Stadium | |
| Capacity: 20,866[1] | Capacity: 60,411[2] | Capacity: 14,223[3] | Capacity: 7,937[4] | |
| Dunfermline Athletic | Heart of Midlothian | |||
| East End Park | Tynecastle Park | |||
| Capacity: 12,509[5] | Capacity: 17,420[6] | |||
| Hibernian | Inverness Caledonian Thistle | |||
| Easter Road | Caledonian Stadium | |||
| Capacity: 16,531[7] | Capacity: 7,500[8] | |||
| Kilmarnock | Livingston | Motherwell | Rangers | |
| Rugby Park | Almondvale Stadium | Fir Park | Ibrox Stadium | |
| Capacity: 17,889[9] | Capacity: 10,016[10] | Capacity: 13,677[11] | Capacity: 50,817[12] | |
| Team | Outgoing manager | Date of vacancy | Manner of departure | Position in table | Incoming manager | Date of appointment | |
|---|---|---|---|---|---|---|---|
| Livingston | Richard Gough | 22 May 2005 | Resigned | Pre-season | Paul Lambert | 1 June 2005 | |
| Celtic | Martin O'Neill | 25 May 2005 | Resigned | Gordon Strachan | 1 June 2005 | ||
| Heart of Midlothian | Steven Pressley John McGlynn | 29 June 2005 | End of caretaker spell | George Burley | 30 June 2005 | ||
| Heart of Midlothian | George Burley | 21 October 2005 | Mutual consent | 1st | Graham Rix | 8 November 2005 | |
| Dundee United | Gordon Chisholm | 10 January 2006 | Sacked | 9th | Craig Brewster | 13 January 2006 | |
| Inverness Caledonian Thistle | Craig Brewster | 13 January 2006 | Signed by Dundee United | 7th | Charlie Christie | 28 January 2006 | |
| Livingston | Paul Lambert | 11 February 2006 | Resigned | 12th | John Robertson | 15 February 2005 | |
| Heart of Midlothian | Graham Rix | 22 March 2006 | Sacked | 2nd |  Valdas Ivanauskas | 22 March 2006 |
During matches 1–22 each team played every other team twice (home and away).
During matches 23–33 each team played every other team once (either at home or away).
During matches 34–38 each team played every other team in their half of the table once.
| Player | Club | Goals | |
|---|---|---|---|
| 32 | |||
| 18 | |||
| 16 | |||
| 16 | |||
| 16 | |||
| 16 | |||
| 14 | |||
| 14 | |||
| 13 | |||
| 13 | |||
| 12 | |||
| 11 |
Source: SPL official website
The average attendances for SPL clubs during the 2005/06 season are shown below:
| Team | Average | |
|---|---|---|
| Celtic | 58,149 | |
| Rangers | 49,245 | |
| Hearts | 16,767 | |
| Hibernian | 13,816 | |
| Aberdeen | 12,727 | |
| Dundee United | 8,197 | |
| Kilmarnock | 7,070 | |
| Dunfermline Athletic | 6,260 | |
| Motherwell | 6,250 | |
| Falkirk | 5,515 | |
| Inverness CT | 5,061 | |
| Livingston | 4,938 |
Source: SPL official website
See main article: Scottish Premier League monthly awards.
| Month | Manager | Player | Young Player | |
|---|---|---|---|---|
| August | George Burley (Hearts) |  Rudolf Skácel (Hearts) | Steven Naismith (Kilmarnock) | |
| September | George Burley (Hearts) | Andy Webster (Hearts) | Kevin Thomson (Hibernian) | |
| October | Gordon Strachan (Celtic) |  Stilian Petrov (Celtic) | Darryl Duffy (Falkirk) | |
| November | Tony Mowbray (Hibernian) | Kris Boyd (Kilmarnock) |  Aiden McGeady (Celtic) | |
| December | Craig Brewster (Inverness CT) |  Peter Løvenkrands (Rangers) | Calum Elliot (Hearts) | |
| January | Alex McLeish (Rangers) | Kris Boyd (Rangers) | Steven Naismith (Kilmarnock) | |
| February | Jimmy Calderwood (Aberdeen) |  Maciej Żurawski (Celtic) | Charlie Mulgrew (Dundee United) | |
| March | Terry Butcher (Motherwell) | Steven Naismith (Kilmarnock) | Brian McLean (Motherwell) | |
| April | Jimmy Calderwood (Aberdeen) | Paul Hartley (Hearts) | Steven Smith (Rangers) |