The actors are on the producer's early wish lists, although it's unclear what roles they're being lined up for, according to Deadline.
It was recently announced that Scott Derrickson will be directing the film, news he confirmed on Twitter earlier this week.
Derrickson's previous credits include 'Sinister' and 'The Exorcism of Emily Rose'.
Marvel Studios president Kevin Feige recently said that the film will show the supernatural side of the Marvel universe.
"There's a whole other side to the Marvel universe, which is the supernatural side. We haven't done anything that mind-trippy yet and for me, Doctor Strange is our doorway into that," he said.