Felicity Jones as Ruth Bader Ginsburg

Armie Hammer as Martin D. Ginsburg

Justin Theroux as Mel Wulf

Sam Waterston as Erwin Griswold

Kathy Bates as Dorothy Kenyon

Cailee Spaeny as Jane C. Ginsburg

Callum Shoniker as James Steven Ginsburg

Jack Reynor as James H. Bozarth

Stephen Root as Professor Brown

Ronald Guttman as Professor Gerald Gunther

Chris Mulkey as Charles Moritz

Gary Werntz as Judge William Edward Doyle

Francis X. McCarthy as Judge Fred Daugherty

Ben Carlson as Judge William Judson Halloway Jr.

Ruth Bader Ginsburg as Self

Amanda MacDonald as Stern Mother

Karl Graboshas as Emergency Room Doctor

Angela Galuppo as Emily Hicks

Joe Cobden as Jim

Dawn Ford as Nurse 1

Michael Dickson as Second Professor

Holly Gauthier-Frankel as Millicent

Jeff Lillico as Fitzpatrick

Arthur Holden as Wyland Leadbetter

Gabrielle Graham as Parker

Wendy Crewson as Harriet Griswold

John Ralston as Tom Miller