Womack, who played Ronnie Mitchell in the soap, is said to have held "secret talks" with ITV bosses and is now on the shortlist to join the panel.
"Samantha is brilliant and the bosses love her," a source told The Sun. "She's hugely popular as ten million people watched her every week on EastEnders - and she's got a fair old mouth on her.
"She's not afraid to call a spade a spade, but she also has a down-to-earth approach that producers think will encourage acts. We don't just want the judges to slag people off."
David Walliams and Dannii Minogue have also been touted to join Britain's Got Talent, though the insider claims that the X Factor judge will have to rely on Simon Cowell to land the role.
"Dannii didn't even make the long list," they said. "She's only got a chance if Simon Cowell steps in and gives her the job."
ITV chiefs are searching for new judges after Michael McIntyre quit Britain's Got Talent and David Hasselhoff was allegedly axed. Amanda Holden has confirmed on Twitter that she will return to the panel.
Womack left EastEnders this year following her character's controversial baby swap plot.