Chadwick Boseman as Thurgood Marshall

Josh Gad as Sam Friedman

Kate Hudson as Eleanor Strubing

Sterling K. Brown as Joseph Spell

James Cromwell as The Judge

Dan Stevens as Lorin Willis

Sophia Bush as Jennifer

Jussie Smollett as Langston Hughes

Marina Squerciati as Stella Friedman

Keesha Sharp as Buster Marshall

Jeremy Bobb as John Strubing

Barrett Doss as Bertha Lancaster

John Magaro as Irwin Friedman

Rozonda 'Chilli' Thomas as Zora Neale Hurston

Jeffrey DeMunn as Dr. Sayer

Josie DiVincenzo as Ruthie

Derrick Baskin as Ted Lancaster

Ed Jewett as Arthur Wright

Robert Bozek as Lester Gilman

Michael Bernardi as Dick Weisman

Lauren Friedman as Rose Steinberg

Benjamin Crump as Z. Alexander Looby

Perris K. Fortson as Billy Lyons

Benjamin Sheeler as Ellis

Ahna O'Reilly as Mrs. Richmond

Roger Guenveur Smith as Walter White

Andra Day as Minton's Singer

Peter Johnson as Harlem Musician

Zanete Shadwick as Irene Lancaster

Dan Bittner as Smiling Racist

Daniel Stewart Sherman as Officer McCoy

Christopher Mele as Insurance Court Judge

Jada K. Cox as NAACP Secretary

Bill Smith as Algonquin Club Patron (uncredited)