Cast of Definitely, Maybe
24 credited, in billing order.
Ryan Reynoldsas Will Hayes
Abigail Breslinas Maya Hayes
Elizabeth Banksas Emily
Isla Fisheras April
Rachel Weiszas Summer Hartley
Kevin Klineas Hampton Roth
Derek Lukeas Russell McCormack
Liane Balabanas Kelly
Annie Parisseas Anne
Nestor Serranoas Arthur
Kevin Corriganas Rafael
An Nguyenas Ad Exec
Adam Brooksas Bookstore Owner
Emily Wickershamas 1998 Intern
Daniel Eric Goldas Charlie
Adam Ferraraas Gareth
Matthew Mason
Matthew Masonas Headphone Guy
Rick Derby
Rick Derbyas Planet Ordon Visitor
Sakina Jaffreyas School Mom
Bob Wiltfongas School Dad
Ryder Chasin
Ryder Chasinas Boy With Book
Fiona Lane
Fiona Laneas Angry Girl
Dana Eskelsonas Angry Girl's Mom
Luis Arriaga
Luis Arriagaas Luis
