Scarlett Johansson as Natasha Romanoff / Black Widow

Florence Pugh as Yelena Belova

Rachel Weisz as Melina

David Harbour as Alexei

Ray Winstone as Dreykov

Ever Anderson as Young Natasha

Violet McGraw as Young Yelena

O-T Fagbenle as Mason

William Hurt as Secretary Ross

Olga Kurylenko as Antonia / Taskmaster

Ryan Kiera Armstrong as Young Antonia

Liani Samuel as Lerato

Michelle Lee as Oksana

Lewis Young as Scientist Morocco 1

C.C. Smiff as Scientist Morocco 2

Nanna Blondell as Ingrid

Simona Zivkovska as Widow

Erin Jameson as Widow

Shaina West as Widow

Yolanda Lynes as Widow

Claudia Heinz as Widow

Fatou Bah as Widow

Jade Ma as Widow

Jade Xu as Widow

Lucy-Jayne Murray as Widow

Lucy Cork as Widow

Eniko Fulop as Widow

Lauren Okadigbo as Widow

Aurélia Agel as Widow

Zhanè Samuels as Widow

Shawarah Battles as Widow

Tabby Bond as Widow

Madeleine Nicholls as Widow

Yasmin Riley as Widow

Fiona Griffiths as Widow

Georgia Curtis as Widow

Ione Butler as Widow

Aubrey Cleland as Widow

Kurt Yue as Ross Lieutenant

Douglas Robson as Ohio Agent

Zoltán Nagy as Budapest Clerk

Marcel Dorian as Man In BMW

Liran Nathan as Mechanic

Judit Varga-Szathmary as Mechanic's Wife

Noel Krisztian Kozak as Mechanic's Child

Martin Razpopov as Tattoo Gulag Inmate

Olivier Richters as Ursa

Nina Novich as Gulag Inmate

Andrew Byron as Gulag Cookie Guard

Ed Ashe as Strudel Gulag Guard

Dawid Szatarski as Red Room Scientist 1

Cali Nelle as Red Room Scientist 2

Geoffrey D. Williams as Ross Agent

Robert Pralgo as Ross Agent

Jacinte Blankenship as Ross Agent

Josh Henry as Ross Agent

Jose Miguel Vasquez as Ross Agent

Valentina Herrera as Young Widow

Danielle Jalade as Young Widow

Aria Brooks as Street Kid

Sophie Colgrove as Street Kid

Caister Myung Choi as Street Kid

Rob Horrocks as Polish Soldier (uncredited)

Oliver Simms as Super Soldier (uncredited)

Yuuki Luna as Widow (uncredited)

Kalina Vanska as Commuter (uncredited)

Jordyn Curet as Young Ingrid (uncredited)

Joakim Skarli as Russian Soldier (uncredited)

Ian Wilson as Russian Spetnaz (uncredited)

Gavin Lee Lewis as Prisoner (uncredited)

Luigi Boccanfuso as Gulag Prisoner (uncredited)

Clem So as Gulag Inmate (uncredited)

Graham Kitchen as Gulag Inmate #4 (uncredited)

Paul O'Kelly as Riot Guard (uncredited)

Obie Matthew as Prison Riot Guard (uncredited)

Ty Hurley as Prison Riot Guard (uncredited)

Stephen Samson as KGB (uncredited)

Julia Louis-Dreyfus as Contessa Valentina Allegra de Fontaine (uncredited)

Jeremy Renner as Clint Barton / Hawkeye (voice) (uncredited)

Dale Liner as SWAT Team Leader (uncredited)