Brandon Routh was the last actor to portray the comic book icon on the big screen in 2006's Superman Returns.
The Dark Knight director Christopher Nolan has signed on to produce another installment in the blockbuster franchise, and recent rumours suggested Hamm was being courted to take over the role.
But the actor insists he hasn't been approached by movie bosses - and at 39, he's just too old to play the part.
He says, "I certainly haven't been informed of that. They might want to run that by me. I don't know, I think unless Superman's power was the power of being really old... I maybe aged out of that competition."