Stephen Robinson's Aberdeen reign is over inside eight months, with the head coach sacked after winning just three from 12 Premiership matches this season.
The Dons sit second bottom and Satueday's 4-0 defeat by Hibernian was their fourth straight loss in all competitions.
Brian Kerr and Stephen Craigan have also left the club, with Stuart Duff placed in interim charge.
Club hero Willie Miller described Saturday's result as "utterly embarrassing", going on to tell BBC Sportsound listeners that Robinson resembled "a man lost".
The 51-year-old former Northern Ireland international previously managed Oldham Athletic, Motherwell, Morecambe and St Mirren.
The Dons sit second bottom and Satueday's 4-0 defeat by Hibernian was their fourth straight loss in all competitions.
Brian Kerr and Stephen Craigan have also left the club, with Stuart Duff placed in interim charge.
Club hero Willie Miller described Saturday's result as "utterly embarrassing", going on to tell BBC Sportsound listeners that Robinson resembled "a man lost".
The 51-year-old former Northern Ireland international previously managed Oldham Athletic, Motherwell, Morecambe and St Mirren.