It Ain't Seinfeld was a professional wrestling supercard event produced by Extreme Championship Wrestling (ECW). It took place on May 14, 1998 in the Elks Lodge #878 in Elmhurst, Queens, New York City, New York. Eight matches took place at the event. The main event was a six-man tag team match pitting the Dudley Brothers (Buh Buh Ray, D-Von and Big Dick) against Tommy Dreamer, Spike Dudley and the Sandman. The event also saw the introduction of the ECW FTW Heavyweight Championship by Taz.