Reports that the actress will appear on the Channel 5 series are "nonsense", sources close to the actress told TMZ.
Lohan arrived in London yesterday (December 29), fuelling rumours that she was set to appear on the 2013 series.
Sources have claimed that reports Lohan will join the show are "completely untrue", and pointed out that the actress would not be able to appear as she has a court hearing scheduled for January 15.
The Mean Girls star is due in court to discuss violation of her probation. If she is deemed to have violated the terms of her probation, she could face up to 245 days in jail.
The lineup for the series has yet to be confirmed, but bookmakers have already installed The X Factor's Rylan Clark as the favourite to win the show. He is rumoured to be entering the house alongside Steps singer Claire Richards and jockey Frankie Dettori.
Celebrity Big Brother 2013 launches on Channel 5 on Thursday, January 3 at 9pm.
Photo gallery: Celebrity Big Brother 2013 - First pictures of the house: