Fictional Marvel Comics character, as a sidekick to Captain America. The character was created by Joe Simon and Jack Kirby and first appeared in Captain America Comics #1 (cover-dated March 1941). The character died, and was brought back to life with his memories erased, as The Winter Soldier. The character's memories and personality are later restored, leading him to become a dark hero in search of redemption.

When Joe Simon created his initial sketch of Captain America for Marvel Comics precursor Timely Comics in 1940, he included a young sidekick. "The boy companion was simply named Bucky, after my friend Bucky Pierson, a star on our high school basketball team", Simon said in his autobiography.

“Bucky” was a common name in the first half of the 20th century; linked to both a male deer and the name Buchanan.

Sebastian Stan portrays the character in the Marvel Cinematic Universe films and the television series The Falcon and the Winter Soldier.