Amsterdam Vallon is a fictional character from the film Gangs of New York, directed by Martin Scorsese. Set in the mid-19th century, Amsterdam is portrayed as a young man seeking revenge for his father's death at the hands of a gang leader. The character is played by actor Leonardo DiCaprio. In the film, Amsterdam navigates the violent and chaotic world of New York City's gangs, particularly the Dead Rabbits and the Natives. His journey explores themes of loyalty, revenge, and the struggle for power in a rapidly changing society.