The referees have been appointed for this weekend's SPFL games:
Scottish Premiership - Friday
Ross County v Dundee United - Bobby Madden (BT Sport, 7.45pm)
Scottish Premiership - Saturday
Aberdeen v Hamilton Accies - Brian Colvin
Dundee v Inverness CT - William Collum
Motherwell v Celtic - Calum Murray (Sky Sports, 12.45pm)
Partick Thistle v Kilmarnock - Steven McLean
St Mirren v St Johnstone - Kevin Clancy
Scottish Championship - Saturday
Alloa Athletic v Dumbarton - Kevin Graham
Falkirk v Hibernian - Stephen Finnie
Heart of Midlothian v Queen of the South - Craig Charleston
Raith Rovers v Livingston - Crawford Allan
Rangers v Cowdenbeath - John Beaton
Scottish League 1 - Saturday
Brechin City v Airdrieonians - Des Roache
Dunfermline Athletic v Ayr United - Euan Anderson
Stenhousemuir v Forfar Athletic - Mat Northcroft
Stirling Albion v Peterhead - Barry Cook
Stranraer v Morton - Gavin Ross
Scottish League 2 - Saturday
Albion Rovers v Elgin City - Colin Steven
Arbroath v Annan Athletic - Steven Kirkland
Berwick Rangers v Clyde - Alan Newlands
East Fife v Montrose - Grant Irvine
Queen's Park v East Stirlingshire - David Munro