Seinfeld: Cast Rate: –☹️ Very Bad🙁 Bad😐 Average🙂 Good😃 Excellent🤩 Super! ★ Save Rating✔ Rating Saved! Notify me: –about new episodeabout new seasonabout end of season Subscribe✔ Subscription Saved! Seinfeld Comedy 7/5/89 – 5/14/98 NBC United States http://www.sonypictures.com/tv/seinfeld/ GeneralEpisodesCastCharactersGallery Cast See full cast → Jason Alexander as George Costanza Jason Alexander as George Costanza Jerry Seinfeld as Jerry Seinfeld Michael Richards as Cosmo Kramer Julia Louis-Dreyfus as Elaine Benes Julia Louis-Dreyfus as Elaine Benes Lee Garlington as Claire