Sebastian Stan (born August 13, 1982) is a Romanian-American actor. He gained recognition for his role as Bucky Barnes / Winter Soldier in the Marvel Cinematic Universe media franchise, beginning with 2011's Captain America: The First Avenger. He later returned in Captain America: The Winter Soldier (2014), and went on to star in Captain America: Civil War (2016), Avengers: Infinity War (2018), Avengers: Endgame (2019) and The Falcon and the Winter Soldier (2021).
On television, he has played Carter Baizen in Gossip Girl, Prince Jack Benjamin in Kings, Jefferson in Once Upon a Time, and T.J. Hammond in Political Animals. The latter earned him a nomination for the Critics' Choice Television Award for Best Supporting Actor in a Movie/Miniseries. In films, he co-starred in Jonathan Demme's comedy-drama Ricki and the Flash and Ridley Scott's science fiction film The Martian. In 2017, he portrayed Jeff Gillooly in the biopic I, Tonya, and in 2022, he stars in the miniseries Pam & Tommy.
Known For

Avengers: Secret Wars
Bucky Barnes / Winter Soldier
2027

Avengers: Doomsday
Bucky Barnes / Winter Soldier
2026

Thunderbolts*
Bucky Barnes
2025

The Apprentice
Donald Trump
2024

A Different Man
Edward
2024

Dumb Money
Vlad Tenev
2023

Ghosted
God
2023

The Magic Of Passion
Terry the terrific
2022

Marvel Studios' 2021 Disney+ Day Special
James 'Bucky' Barnes / Winter Soldier (archive footage)
2021

Monday
Mickey
2020

The Devil All the Time
Deputy Lee Bodecker
2020

Endings, Beginnings
Frank
2020

The Last Full Measure
Scott Huffman
2020

We Have Always Lived in the Castle
Charles Blackwood
2019

Destroyer
Chris
2018

Avengers: Infinity War
Bucky Barnes / Winter Soldier
2018

Black Panther
James 'Bucky' Barnes / Winter Soldier (uncredited)
2018

I, Tonya
Jeff
2017

I'm Not Here
Steve
2017

Logan Lucky
Dayton White
2017

Captain America: Civil War
Bucky Barnes / Winter Soldier
2016

The Bronze
Lance Tucker
2016

The Martian
Chris Beck
2015

Ant-Man
James 'Bucky' Barnes / Winter Soldier (uncredited)
2015

Ricki and the Flash
Joshua Brummel
2015

Captain America: The Winter Soldier
Bucky Barnes / Winter Soldier
2014

Marvel Studios: Assembling a Universe
Self
2014

The Apparition
Ben Curtis
2012

Gone
Billy
2012

Captain America: The First Avenger
James Buchanan 'Bucky' Barnes
2011

Black Swan
Andrew / Suitor
2010

Hot Tub Time Machine
Blaine
2010

Spread
Harry
2009

Rachel Getting Married
Walter
2008

The Covenant
Chase Collins
2006
Untitled Spy Comedy

The Education of Charlie Banks
Leo Reilly
2007

The Architect
Martin Waters
2006

Red Doors
Simon
2005

Tony n' Tina's Wedding
Johnny Nunzio
2004

Let the Evil Go West

Captain America: Brave New World
Bucky Barnes (uncredited)
2025

Sharper
Max
2023

Fresh
Steve
2022

Pam & Tommy
Tommy Lee · (8 episodes)
2022

The 355
Nick Fowler
2022

What If...?
Bucky Barnes / Winter Soldier (voice) · (1 episode)
2021

The Falcon and the Winter Soldier
James 'Bucky' Barnes / Winter Soldier · (6 episodes)
2021

Marvel Studios Assembled
Self - Bucky Barnes / The Winter Soldier · (1 episode)
2021

Chadwick Boseman: A Tribute for a King
Self - Actor, "Avengers: Endgame"
2020

Marvel Studios: Expanding the Universe
Self
2019

Avengers: Endgame
Bucky Barnes / Winter Soldier
2019

Joseph Pulitzer: Voice of the People
Priest
2019

The Long Way Home: Making 'The Martian'
Self
2016
Crackpot
Burning Rainbow Farm
Fjord
Mihai
Pumping Black

Bupkis
Sebastian Stan · (1 episode)
2023

What If...?
Bucky Barnes / The Winter Soldier (voice) · (1 episode)
2021

Marvel Studios Legends
Bucky Barnes / Winter Soldier (archive footage) (uncredited) · (10 episodes)
2021

I'm Dying Up Here
Clay Appuzzo · (1 episode)
2017

Hot Ones
Self · (1 episode)
2015

Highway
2014
Ruins

What If...?
Bucky Barnes (voice) · (5 episodes)
2021

The Late Show with Stephen Colbert
Self · (1 episode)
2015

ARES: live
Chris Beck · (6 episodes)
2015

Variety Studio: Actors on Actors
Self · (1 episode)
2014

Late Night with Seth Meyers
Self · (1 episode)
2014

Labyrinth
Will Franklyn · (2 episodes)
2012

Political Animals
T.J. Hammond · (6 episodes)
2012

Honest Trailers
Bucky Barnes (archive footage) · (1 episode)
2012

Once Upon a Time
Jefferson / Mad Hatter · (6 episodes)
2011

Watch What Happens Live with Andy Cohen
Self - Guest · (1 episode)
2009

Kings
Jack Benjamin · (13 episodes)
2009

Gossip Girl
Carter Baizen · (11 episodes)
2007

The Graham Norton Show
Self · (1 episode)
2007

Jimmy Kimmel Live!
Self · (1 episode)
2003

71 Fragments of a Chronology of Chance
Kid
1995

Law & Order
Justin Lafferty · (1 episode)
1990

The Oscars
Self · (1 episode)
1953

Golden Globe Awards
Self - Winner · (1 episode)
1944