The Sopranos produced six seasons. HBO broadcast the series from January 10, 1999, through June 10, 2007, covering six seasons and 86 episodes in total.
The first five seasons each contained 13 episodes. The sixth season was longer, with 21 episodes, and HBO released it in two parts. That split can cause confusion: some viewers informally refer to the later installments as a seventh season, but they are officially both parts of season six.
The six-season structure also reflects the show’s unusually long production gaps. The series did not always return on a standard annual schedule, and the final season arrived in two stages. Despite that unusual release pattern, the official episode count remains six seasons, not seven or eight. The show follows Tony Soprano, his family, and the DiMeo crime organization through its complete HBO run.