Seinfeld produced 180 episodes during its full nine-season NBC run. The sitcom originally aired from July 5, 1989, through May 14, 1998, with Jerry Seinfeld and Larry David’s creation becoming one of NBC’s defining comedy series.
The total covers the complete regular run rather than only the episodes with standard half-hour scheduling. The count includes installments presented as two parts, including the series finale, as well as retrospective material that was divided into parts for episode-counting purposes. That accounting explains why casual tallies can sometimes differ.
The first season was unusually small: the pilot and four additional episodes made up a five-episode order. NBC executive Rick Ludwin helped keep the project alive after the pilot’s poor test response, and the show gradually expanded into a nine-season hit. Its central cast featured Seinfeld as a fictionalized version of himself, Jason Alexander as George, Julia Louis-Dreyfus as Elaine, and Michael Richards as Kramer.
A common mix-up is confusing the 180-episode series total with the number of stories or broadcast segments. Depending on whether multipart episodes are counted as separate installments, lists may look different, but the standard series total is 180 episodes.