Angela Bassett turned down the role of Storm.

Selma Blair was considered for Jean Grey.

James Caviezel was set to play Cyclops but backed out.

Rachael Leigh Cook auditioned for the part of Rogue, but was not interested in the amount of CGI involved.

Considered for the role of Wolverine.

He was approached a few times by 20th Century Fox in the late 1990's for the part of Wolverine in the film adaptation of X-Men. When Fox finally decided on a director/producer team, he had to turn down their offer due to the condition that he was expected to be on the set for nine consecutive months, putting his band and touring on hold.

Johnny Depp turned down the role of Wolverine.

Considered for the role of Wolverine.

Considered for the role of Rogue.

Considered for the role of Wolverine.

Helen Hunt turned down the role of Jean Grey.

Considered for the part of Rogue.

Considered for the role of Wolverine.

Kevin Nash (WWE wrestler) was offered the role of Sabertooth, but turned it down.

Norton was reportedly considered for the role of Wolverine or Cyclops.

Renée O'Connor was considered for the role of Jean Grey.

Jada Pinkett-Smith was once considered for the role of Storm but turned it down.

Natalie Portman turned down the part of Rogue.

Considered for the role of Wolverine.

Ryan was considered to play Mystique.

Dougray Scott was set to play Wolverine but dropped out to do Mission: Impossible II.

Bryan Singer originally approached John Williams to compose the score but he was already committed to Saving Private Ryan.

Kate Winslet turned down the role of Rogue.