The fourth season of the American crime drama series The Sopranos began airing on HBO on September 15, 2002, and concluded on December 8, 2002, consisting of thirteen episodes.

[1] The story of season four focuses on the marriage between Tony and Carmela, as Tony engages in an affair with his ex-lover's cousin Svetlana and Carmela finds herself infatuated with Furio.

The increasing tension between Tony and Ralph Cifaretto comes to a violent head and Uncle Junior is again put on trial for his crimes.

Adriana is forced into becoming an FBI informant, while Christopher plunges deeper into heroin addiction.

The website's critics consensus reads: "The war seeps into the Sopranos household in a season of discontent, with each of these artfully rendered devils stewing in a divine comedy of their own making.