The Championship club sacked Gary Bowyer earlier today.
Bowyer has been in the job since May 2013 and helped guide the club to high finishes in the league in the last two seasons but has finally faced the chop at Ewood Park - after previously working as a caretaker boss at the club on two occasions.
His assistant Terry McPhillips has also left the club along with Craig Short, Tony Grant and John Keely has also left.
The Scot has been out of work since being sacked by Villa in February 2015 and being replaced by tim Sherwood.
Lambert's time at Villa was mixed. He alienated himself from fans by the end of his tenure because of the club's slow style of play.
However Blackburn will be encouraged by his excellent record in the Football League with Colchester United and Norwich City.