The former Libertines frontman was sentenced to six months of imprisonment for the possession of cocaine back in May after pleading guilty to the charge brought against him.
Doherty was expected to finish his sentence on August 21, allowing him to commit to his bookings for this year's Reading and Leeds festivals.
However, Doherty is now out of prison, with messages on his website the Albion Rooms seeming to confirm this.
"On this bright sunny morning Peter was released from prison and thanks everyone for their valued support while inside," a message read.
Thought to be using the username Babybear, Doherty's manager Adrian Hunter posted a thanks of support on the message boards of website French Dog.
"Peter has been released as was reported there hours ago. Long day folks but a happy one. Many good things done. All's good and peace and quiet shall now ensue. A bit of 'bedding in' and reflection is on the cards and so much the better," he wrote.
Doherty could still face further charges of burglary after claims were made that he had stolen a guitar from a German music shop while on a night out.
Watch the video for Pete Doherty's 'Last of the English Roses' below: