Antonio 'L.A.' Reid has already been confirmed as one of the judges and rumours are rife over who will take the other coveted spots, with Jessica Simpson, Nicole Scherzinger and British X Factor judge Cheryl Cole all said to be in the running.
Cowell has now confirmed Fergie as another name on his list of potential candidates - but the job will depend on the singer's schedule.
He says, "All I can tell you is that her name was put forward. But... we have to check out everyone's availability... You're working five to six days a week.
"I can confirm that her name has been put forward."