Referees for this weekend's games in the Ladbrokes Premiership, Championship, League 1 and League 2.
Ladbrokes Premiership - Friday
Dundee v Aberdeen - Alan Muir (BT Sport, 7.45pm)
Ladbrokes Premiership - Saturday
Hamilton Academical v St Johnstone - Don Robertson
Inverness CT v Kilmarnock - Bobby Madden
Partick Thistle v Ross County - Willie Collum
Rangers v Motherwell - Steven McLean
Ladbrokes Premiership - Sunday
Heart of Midlothian v Celtic - Kevin Clancy (Sky Sports, 12.30pm)
Ladbrokes Championship - Saturday
Dumbarton v Morton - John Beaton
Dunfermline Athletic v Hibernian - Greg Aitken
Falkirk v Raith Rovers - Nick Walsh
Queen of the South v Dundee United - Stephen Finnie
St Mirren v Ayr United - Gavin Duncan
Ladbrokes League 1 - Saturday
Alloa Athletic v Albion Rovers - Crawford Allan
Brechin City v Livingston - Scott Millar
East Fife v Queen's Park - David Lowe
Peterhead v Airdrieonians - Euan Anderson
Stranraer v Stenhousemuir - David Munro
Ladbrokes League 2 - Saturday
Annan Athletic v Arbroath - Craig Charleston
Cowdenbeath v Clyde - Grant Irvine
Elgin City v Berwick Rangers - Kevin Graham
Montrose v Edinburgh City - David Dickinson
Stirling Albion v Forfar Athletic - Mat Northcroft