Henry Cavill as Altair/Desmond Miles
Cavill is a great actor plus he has a universal look maybe that is why he is going to be Superman but anyway, he is the right age and can work really well
Notable Work: Tudors, Stardust and (most likely)Man of Steel
Kristen Bell as Lucy Stillman
I have no idea why she is suggested for every female comicbook role and even though i am not a fan of her, i think she can play this part very well, besides she has already played it in the game
Notable Work: Assassin's Creed and Veronica Mars
Alan Rickman as Warren Vidic
Been a fan of Rickman ever since Die Hard and he hasn't disappointed ever since
Notable Work: Die Hard, Harry Potter Films, Michael Collins, Dogma, Sweeney Todd , and Love Actually
Ciaran Hinds as Al Mualim
Very underrated actor and he could play the part beautifully
Notable Work: In Bruges, Munich, Road to Perdition and There Will Be Blood
Jude Law as Robert de Sable
Awesome actor and he even looks a bit like Robert
Notable Work: The Talented Mr. Ripley, Cold Mountain, Road to Perdition and Sherlock Holmes
Omar Metwally as Malik
Decent actor, Egyptian, good enough for me
Notable Work: Munich and Rendition