High Quality Content by WIKIPEDIA articles! Season two of Seinfeld, an American television series created by Jerry Seinfeld and Larry David, began airing on January 23, 1991, on NBC. Because of the commencement of the first Gulf War, the second season`s premiere was postponed one week. The season comprised 12 episodes, and concluded its initial airing on June 26, 1991. It introduced a number of characters who played significant roles in later episodes, such as Jerry`s Uncle Leo and Jerry`s suicidal neighbor Newman.