Jesse Armstrong Creator, Executive Producer Nicholas Braun Greg Actor Brian Cox Logan Roy Actor Kieran Culkin Roman Roy Actor Dagmara Domińczyk Karolina Actor Peter Friedman Frank Actor Justine Lupe Actor Matthew Macfadyen Tom Actor David Rasche Actor Alan Ruck Connor Roy Actor J. Smith-Cameron Gerri Actor Sarah Snook Siobhan "Shiv" Roy Actor Fisher Stevens Hugo Baker Actor Jeremy Strong Kendall Roy Actor Hiam Abbass Marcia Roy Guest Star Natalie Gold Rava Roy Guest Star Rob Yang Lawrence Guest Star Arian Moayed Stewy Guest Star Holly Hunter Rhea Jarrell Guest Star Cherry Jones Nan Pierce Guest Star Danny Huston Jamie Laird Guest Star Jeannie Berlin Cyd Peach Guest Star Adam McKay Executive Producer Frank Rich Executive Producer Kevin J. Messick Executive Producer Will Ferrell Executive Producer Jane Tranter Executive Producer Mark Mylod Executive Producer Tony Roche Executive Producer Scott Ferguson Executive Producer