Tony Gilroy Director, Writer George Clooney Michael Clayton Actor, Executive Producer Tom Wilkinson Arthur Edens Actor Tilda Swinton Karen Crowder Actor Sydney Pollack Marty Bach Actor, Producer Ken Howard Don Jeffries Actor Michael O'Keefe Barry Grissom Actor Denis O'Hare Mr. Greer Actor Julie White Mrs. Greer Actor Jennifer Van Dyck Ivy Actor Frank Wood Gerald Actor Bill Raymond Gabe Zabel Actor Pamela Gray Cindy Bach Actor Julia Gibson Stephanie Clayton Actor Steve Samuels Producer Jennifer Fox Producer Kerry Orent Producer Steven Soderbergh Executive Producer James Holt Executive Producer Anthony Minghella Executive Producer James Newton Howard Original Music Robert Elswit Cinematographer Kevin Thompson Production Design John Gilroy Film Editing Sarah Edwards Costume Design Ellen Chenoweth Casting Clay Brown Art Director George DeTitta Jr. Set Decoration Chuck Potter Set Decoration Paul Cheponis Set Decoration Christine Mayer Set Decoration