The International Wrestling Federation (IWF, also known as Killer Kowalski's All-Stars) was a promotion that held events in the Northeastern United States from 1979 to 1996, when it was run by Killer Kowalski. The promotion was based in Reading, Massachusetts, with offices in Burlington, Vermont. It operated in conjunction with Kowalski's famed wrestling school in Malden, Massachusetts.
The International Wrestling Federation was formed in 1979 by Killer Kowalski two years after starting his wrestling school, the Killer Kowalski Institute for Professional Wrestling, in Malden, Massachusetts. According to former student John Callahan, Kowalski decided to form his own group after an argument with Angelo Savoldi at the Boston Garden. The first championship titles were introduced in 1982 with Kowalski and The Executioners being billed as the first IWF Heavyweight and Tag Team Champions respectively. That same year, the IWF began airing a Sunday morning show, Bedlam from Boston, on the WXNE-TV. During this period, Kowalski partnered with Dominic DeNucci and Bruno Sammartino's "International Wrestling" group based in Pittsburgh, Pennsylvania.
Kowalski had a strong relationship with both Vince McMahon Sr. and his son Vince McMahon Jr.. His students (many of whom IWF stars) regularly appeared on World Wrestling Federation television as preliminary wrestlers during the 1980s and 90s. His best known students - Triple H, Chyna and Perry Saturn - had prominent roles in the company during the Attitude Era.
The IWF later featured former WWF stars Demolition Ax, King Kong Bundy, Hercules, The Honky Tonk Man, The Mountie, Jake Roberts, Jimmy Snuka, and Nikolai Volkoff. In December 1992, following his controversial departure from the WWF, The Ultimate Warrior (appearing under his old "Dingo Warrior" ring name) wrestled Hercules at an IWF show in Billerica, Massachusetts. Then current WWF stars, such as Adam Bomb, Bob Backlund, Doink the Clown, King Kong Bundy and Hakushi, occasionally appeared at IWF events in the mid-1990s.
The IWF stopped holding regular shows after 1996 though Kowalski continued promoting under the "Killer Kowalski's All-Stars" banner for a few more years. In November 2001, the IWF took part in "Headlocks for Humanity", an American Red Cross benefit show for victims of the September 11th attacks, with Slyk Wagner Brown (managed by April Hunter) and CueBall representing the promotion. One of the IWF's last shows was held in Sutton, New Hampshire on November 2, 2002. Finally in 2003, health issues forced Kowalski to withdraw from both promoting and the wrestling school. Following his death in 2008, the Kowalski estate auctioned off IWF correspondence and other wrestling memorabilia from his career.
- IWF Heavyweight Championship
- IWF Tag Team Championship
- IWF Light Heavyweight Championship
- IWF Ladies Championship