Anthony John Soprano (born 1959) is a fictional character and the protagonist in the HBO television drama series The Sopranos (1999–2007), portrayed by James Gandolfini. Usually referred to as Tony, the Italian-American character was conceived by The Sopranos creator and showrunner David Chase, who was also largely responsible for the character's story arc throughout the show's six seasons. The character is loosely based on real-life New Jersey mobster Vincent "Vinny Ocean" Palermo, a former caporegime (capo) and "de facto" boss of the DeCavalcante crime family. Bobby Boriello and Mark Damiano II portrayed Soprano as a child in one episode each; Danny Petrillo played the character as a teenager in three episodes.

In the first season, Tony is a capo in the DiMeo crime family. Between the first and second seasons, he is promoted to street boss, a position he retains until the sixth season; his uncle Corrado "Junior" Soprano is the official boss up until early in the sixth season, but has little or no actual power. Throughout the series, Tony struggles to balance the conflicting needs of his actual family—wife Carmela, daughter Meadow, son A. J., and mother Livia—with those of the Mafia family he controls. He often displays behavior traits characteristic of a violent sociopath, struggles with depression and is prone to panic attacks. He seeks treatment from Dr. Jennifer Melfi in the first episode and remains in therapy on and off up until the penultimate episode of the series.

Both the Tony Soprano character and Gandolfini's performance garnered widespread critical acclaim, with Soprano being often cited as one of the greatest and most influential characters in television history. Gandolfini, for his portrayal of the character, won three Emmy Awards for Best Lead Actor in a Drama Series, three Screen Actors Guild Awards for Best Male Actor in a Drama Series and a Golden Globe Award for Best Actor – Television Series Drama as well as two additional SAG Awards for Best Performance by an Ensemble in a Drama Series.