Dungannon Swifts' 2–1 win over Donegal Celtic on 21 April 2012 left them bottom of the table by four points, with only one game remaining.
Lisburn Distillery retained their Premiership status by defeating Newry City 3–2 over two legs in the promotion/relegation play-off.
[4][5] Championship 1 runners-up Limavady United were not eligible to take part in a promotion/relegation play-off against last season's 11th-placed Premiership club Donegal Celtic, as they did not attain the required domestic licence.
[6] 1 Carrick Rangers played their home matches at Crusaders' Seaview ground.
Lisburn Distillery won the tie 3–2 on aggregate and retained their Premiership status.