Robert Pattinson as Eric Packer a 28 year old multi-billionaire asset manager who makes an odyssey across midtown Manhattan in order to get a haircut.
Sarah Gadon as Elise Shifrin, Eric’s new wife, yet almost a stranger. She is an heiress and a poet. Chance meetings with Elise punctuate Eric’s strange day.
Juliette Binoche as Didi Fancher, an art dealer with whom Eric has an affair.
Paul Giamatti as Benno Levin/Richard Sheets, quite possibly an insane man who holds a complicated grudge against Eric.
Samantha Morton as Vija Kinski, Eric’s chief of theory.
Jay Baruchel as Shiner
Mathieu Amalric as Andre Petrescu aka The Pastry Assassin, a man who stalks prominent figures of politics, entertainment and, in Eric’s case, finance “to sabotage power and wealth”. His weapon of choice? Pies. “I glop you good.”
Emily Hampshire as Jane Melman
Kevin Durand as Torval
Patricia McKenzie as Kendra Hayes
Screencap from Official Cosmopolis site: