Margot Robbie as Tonya Harding in her teens through 40s Mckenna Grace as young Tonya Harding Sebastian Stan as Jeff Gillooly, Harding’s lover and friend, later husband Allison Janney as LaVona Fay Golden, Harding’s mother Julianne Nicholson as Diane Rawlinson, Harding's skating coach Caitlin Carver as Nancy Kerrigan, a skating rival and Olympic teammate of Harding, and the victim of the 1994 attack Bojana Novakovic as Dody Teachman, another of Harding’s coaches Paul Walter Hauser as Shawn Eckhardt, a bodyguard and friend of Gillooly Bobby Cannavale as Hard Copy producer Dan Triandiflou as Bob Rawlinson