Hayley Elizabeth Atwell (born 5 April 1982) is a British and American actress. After appearing in various West End productions, Atwell gained popularity for her roles in period dramas, appearing in the films Brideshead Revisited (2008), The Duchess (2008) and the miniseries The Pillars of the Earth (2010); for the latter two, she was nominated for a British Independent Film Award and a Golden Globe Award respectively.
She rose to prominence with her portrayal of Agent Peggy Carter in several Marvel Cinematic Universe (MCU) films, starting with Captain America: The First Avenger (2011), which inspired the creation of the spin-off ABC television series Agent Carter (2015–2016). Atwell also starred in the fantasy films Cinderella (2015), Christopher Robin (2018) and Peter Rabbit 2: The Runaway (2021) and had a leading role in the action film Mission: Impossible – Dead Reckoning Part One (2023). Atwell has received Laurence Olivier Award nominations for her work on stage for her leading performances in The Pride (2013) and Rosmersholm (2020).
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Known For

Grand Prix of Europe
Cindy (voice)
2025

Mission: Impossible - The Final Reckoning
Grace
2025

Tom Cruise: Impossible Missions
Self
2023

Mission: Impossible - Dead Reckoning Part One
Grace
2023

Marvel Studios Assembled: The Making of Doctor Strange in the Multiverse of Madness
Self (uncredited)
2022

Doctor Strange in the Multiverse of Madness
Captain Carter
2022

Marvel Studios' 2021 Disney+ Day Special
Peggy Carter / Captain Carter (voice) (archive footage)
2021

Peter Rabbit 2: The Runaway
Mittens (voice)
2021

Blinded by the Light
Ms Clay
2019

Christopher Robin
Evelyn Robin
2018

The Complete Walk: Cymbeline
Innogen
2016

Marvel's Captain America: 75 Heroic Years
Self
2016

Edge of Darkness
Narrator
2015

Ant-Man
Peggy Carter
2015

Avengers: Age of Ultron
Peggy Carter
2015

Testament of Youth
Hope Milroy
2015

Marvel: 75 Years, from Pulp to Pop!
Self
2014

Captain America: The Winter Soldier
Peggy Carter
2014

Marvel Studios: Assembling a Universe
Self
2014

Marvel One-Shot: Agent Carter
Peggy Carter
2013

Jimi: All Is by My Side
Kathy Etchingham
2013

The Sweeney
Nancy Lewis
2012

I, Anna
Emmy
2012

Captain America: The First Avenger
Peggy Carter
2011

Tomato Soup
Movie Star
2010

Love Hate
Hate
2009

Thrush
Ruby's Friend
2009

The Duchess
Bess Foster
2008

Brideshead Revisited
Julia Flyte
2008

How About You...
Ellie Harris
2007

Cassandra's Dream
Angela
2007

The Shadow in the North
Rosa Garland
2007

Mansfield Park
Mary Crawford
2007

Rogue Trooper

The Ruby in the Smoke
Rosa Garland
2006

Fear of Fanny
Jane
2006
The Queen of Fashion
Alexandra Schulman

Making Mission: Impossible - A 10 News First Special
Self
2025

Paddington in Peru
Madison
2024

Tomb Raider: The Legend of Lara Croft
Lara Croft (voice) · (8 episodes)
2024

Heartstopper
Aunt Diane · (3 episodes)
2022

SNL Korea
Self · (1 episode)
2021

What If...?
Peggy Carter / Captain Carter (voice) · (5 episodes)
2021

What If...?
Peggy Carter (voice) · (1 episode)
2021

What If...?
Captain Carter / Peggy Carter (voice) · (2 episodes)
2021

Marvel Studios Legends
Peggy Carter (archive footage) (uncredited) · (1 episode)
2021

Marvel Studios: Expanding the Universe
Self
2019

Criminal: UK
Stacey Doyle · (1 episode)
2019

The Kelly Clarkson Show
Self · (1 episode)
2019

Avengers: Endgame
Peggy Carter
2019

The Long Song
Caroline Mortimer · (3 episodes)
2018

A Movie Is Made For Pooh
Self
2018

Howards End
Margaret Schlegel · (4 episodes)
2017

Chicken/Egg
Lauren
2017

Conviction
Hayes Morrison · (13 episodes)
2016

IMDb on the Scene
Self · (1 episode)
2015

Lip Sync Battle
Self · (1 episode)
2015

Cinderella
Cinderella's Mother
2015

Marvel's Agent Carter
Peggy Carter · (18 episodes)
2015

Marvel's Agents of S.H.I.E.L.D.
Peggy Carter · (2 episodes)
2013

Life of Crime
Denise Woods · (3 episodes)
2013

Restless
Eva Delectorskaya · (2 episodes)
2012

Falcón
Consuelo Jiménez · (4 episodes)
2012

Honest Trailers
Peggy Carter (archive footage) · (2 episodes)
2012

Honest Trailers
Grace (archive footage) · (1 episode)
2012

Black Mirror
Martha Starmer · (1 episode)
2011

Any Human Heart
Freya Deverell · (4 episodes)
2010

Conan
Self - Guest · (1 episode)
2010

The Pillars of the Earth
Aliena · (8 episodes)
2010

The Prisoner
4-15 / Lucy · (6 episodes)
2009

The One Show
Self · (1 episode)
2006

The Line of Beauty
Cat Fedden · (3 episodes)
2006

Whatever Love Means
Sabrina Guinness
2005

Jimmy Kimmel Live!
Self · (1 episode)
2003

GMTV
Self · (1 episode)
1993