The 2005 ECW One Night Stand was the inaugural One Night Stand professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE). It took place on June 12, 2005, at the Hammerstein Ballroom in the Manhattan borough of New York City, New York. Although wrestlers from WWE's Raw and SmackDown! brands appeared on the show, the event was primarily produced as a reunion show for wrestlers from the former Extreme Championship Wrestling (ECW) promotion, which had folded in 2001. After the promotion's closure, WWE acquired ECW's assets in 2003.

Peter Joseph "PJ" Polaco is a retired American professional wrestler, best known for his appearances with Extreme Championship Wrestling (ECW) and the World Wrestling Federation (WWF) under the ring name Justin Credible. He is also known for his earlier stint with the WWF under the ring name Aldo Montoya. Polaco is a one-time world champion, having won the ECW World Heavyweight Championship once.