| 1 | SummerSlam 1988 New York City, New York The inaugural SummerSlam saw The Mega Powers team up to defeat The Mega Bucks in a massive tag team main event. | New York City | 1988 | The Mega Powers vs. The Mega Bucks |
| 2 | SummerSlam 1989 East Rutherford, New Jersey Hulk Hogan and Brutus Beefcake defeated Randy Savage and Zeus in the main event. | East Rutherford | 1989 | Hulk Hogan & Brutus Beefcake vs. Randy Savage & Zeus |
| 3 | SummerSlam 1990 Philadelphia, Pennsylvania The Ultimate Warrior successfully defended the WWF Championship against Rick Rude in a Steel Cage match. | Philadelphia | 1990 | The Ultimate Warrior vs. Rick Rude |
| 4 | SummerSlam 1991 New York City, New York Billed as the 'Match Made in Hell', Hulk Hogan and The Ultimate Warrior defeated Sgt. Slaughter, Col. Mustafa, and Gen. Adnan. | New York City | 1991 | Hulk Hogan & The Ultimate Warrior vs. The Triangle of Terror |
| 5 | SummerSlam 1992 London, England A historic event at Wembley Stadium where The British Bulldog defeated Bret Hart for the Intercontinental Championship. | London | 1992 | Bret Hart vs. The British Bulldog |
| 6 | SummerSlam 1993 Auburn Hills, Michigan Lex Luger defeated WWF Champion Yokozuna by count-out, failing to capture the title. | Auburn Hills | 1993 | Yokozuna vs. Lex Luger |
| 7 | SummerSlam 1994 Chicago, Illinois The real Undertaker defeated an impostor Undertaker (played by Brian Lee) following multiple Tombstone Piledrivers. | Chicago | 1994 | The Undertaker vs. 'The Undertaker' |
| 8 | SummerSlam 1995 Pittsburgh, Pennsylvania Diesel retained the WWF Championship against King Mabel in the main event. | Pittsburgh | 1995 | Diesel vs. King Mabel |
| 9 | SummerSlam 1996 Cleveland, Ohio Shawn Michaels defended his WWF Championship against Vader in a chaotic main event. | Cleveland | 1996 | Shawn Michaels vs. Vader |
| 10 | SummerSlam 1997 East Rutherford, New Jersey Bret Hart defeated The Undertaker to win the WWF Championship with Shawn Michaels as the special guest referee. | East Rutherford | 1997 | The Undertaker vs. Bret Hart |
| 11 | SummerSlam 1998 New York City, New York 'Stone Cold' Steve Austin defeated The Undertaker to retain the WWF Championship in a highly anticipated clash. | New York City | 1998 | Steve Austin vs. The Undertaker |
| 12 | SummerSlam 1999 Minneapolis, Minnesota Mankind won the WWF Championship in a triple threat match against Steve Austin and Triple H, featuring Jesse Ventura as referee. | Minneapolis | 1999 | Steve Austin vs. Mankind vs. Triple H |
| 13 | SummerSlam 2000 Raleigh, North Carolina The Rock successfully defended his WWF Championship against Triple H and Kurt Angle. | Raleigh | 2000 | The Rock vs. Kurt Angle vs. Triple H |
| 14 | SummerSlam 2001 San Jose, California During the Invasion angle, The Rock defeated Booker T to win the WCW Championship. | San Jose | 2001 | Booker T vs. The Rock |
| 15 | SummerSlam 2002 Uniondale, New York Brock Lesnar became the youngest WWE Champion at the time by defeating The Rock. | Uniondale | 2002 | The Rock vs. Brock Lesnar |
| 16 | SummerSlam 2003 Phoenix, Arizona Triple H retained the World Heavyweight Championship in the second-ever Elimination Chamber match. | Phoenix | 2003 | Elimination Chamber Match |
| 17 | SummerSlam 2004 Toronto, Ontario, Canada Randy Orton became the youngest World Heavyweight Champion in history by defeating Chris Benoit. | Toronto | 2004 | Chris Benoit vs. Randy Orton |
| 18 | SummerSlam 2005 Washington, D.C. Hulk Hogan defeated Shawn Michaels in a heavily hyped 'Icon vs. Icon' match. | Washington, D.C. | 2005 | Hulk Hogan vs. Shawn Michaels |
| 19 | SummerSlam 2006 Boston, Massachusetts Edge defeated John Cena to retain the WWE Championship in Cena's hometown area. | Boston | 2006 | Edge vs. John Cena |
| 20 | SummerSlam 2007 East Rutherford, New Jersey John Cena defeated Randy Orton to retain the WWE Championship. | East Rutherford | 2007 | John Cena vs. Randy Orton |
| 21 | SummerSlam 2008 Indianapolis, Indiana The Undertaker defeated Edge in a Hell in a Cell match to conclude the event. | Indianapolis | 2008 | The Undertaker vs. Edge |
| 22 | SummerSlam 2009 Los Angeles, California CM Punk defeated Jeff Hardy in a TLC match to win the World Heavyweight Championship. | Los Angeles | 2009 | Jeff Hardy vs. CM Punk |
| 23 | SummerSlam 2010 Los Angeles, California Team WWE defeated The Nexus in a 7-on-7 elimination tag team match. | Los Angeles | 2010 | Team WWE vs. The Nexus |
| 24 | SummerSlam 2011 Los Angeles, California CM Punk defeated John Cena to become the Undisputed WWE Champion, before Alberto Del Rio cashed in his MITB contract. | Los Angeles | 2011 | John Cena vs. CM Punk |
| 25 | SummerSlam 2012 Los Angeles, California Brock Lesnar forced Triple H to submit in a No Disqualification match. | Los Angeles | 2012 | Brock Lesnar vs. Triple H |
| 26 | SummerSlam 2013 Los Angeles, California Daniel Bryan defeated John Cena for the WWE Championship, but Randy Orton immediately cashed in to steal the title. | Los Angeles | 2013 | John Cena vs. Daniel Bryan |
| 27 | SummerSlam 2014 Los Angeles, California Brock Lesnar decimated John Cena, delivering 16 suplexes to win the WWE World Heavyweight Championship. | Los Angeles | 2014 | John Cena vs. Brock Lesnar |
| 28 | SummerSlam 2015 Brooklyn, New York The Undertaker defeated Brock Lesnar in a controversial submission finish. | Brooklyn | 2015 | The Undertaker vs. Brock Lesnar |
| 29 | SummerSlam 2016 Brooklyn, New York Brock Lesnar defeated Randy Orton via TKO after busting Orton open in a bloody finish. | Brooklyn | 2016 | Brock Lesnar vs. Randy Orton |
| 30 | SummerSlam 2017 Brooklyn, New York Brock Lesnar retained the Universal Championship against Roman Reigns, Samoa Joe, and Braun Strowman. | Brooklyn | 2017 | Fatal 4-Way Match for the Universal Championship |
| 31 | SummerSlam 2018 Brooklyn, New York Roman Reigns defeated Brock Lesnar to finally win the Universal Championship. | Brooklyn | 2018 | Brock Lesnar vs. Roman Reigns |
| 32 | SummerSlam 2019 Toronto, Ontario, Canada Seth Rollins defeated Brock Lesnar clean to recapture the Universal Championship. | Toronto | 2019 | Brock Lesnar vs. Seth Rollins |
| 33 | SummerSlam 2020 Orlando, Florida Held in the ThunderDome, 'The Fiend' Bray Wyatt defeated Braun Strowman before the surprise return of Roman Reigns. | Orlando | 2020 | Braun Strowman vs. 'The Fiend' Bray Wyatt |
| 34 | SummerSlam 2021 Paradise, Nevada Roman Reigns defeated a returning John Cena to retain the Universal Championship. | Paradise | 2021 | Roman Reigns vs. John Cena |
| 35 | SummerSlam 2022 Nashville, Tennessee Roman Reigns defeated Brock Lesnar in a wild Last Man Standing match where Lesnar flipped the ring with a tractor. | Nashville | 2022 | Roman Reigns vs. Brock Lesnar |
| 36 | SummerSlam 2023 Detroit, Michigan Roman Reigns retained the Undisputed WWE Universal Championship against Jey Uso in a Tribal Combat match. | Detroit | 2023 | Roman Reigns vs. Jey Uso |
| 37 | SummerSlam 2024 Cleveland, Ohio Cody Rhodes retained the Undisputed WWE Championship against Solo Sikoa in a Bloodline Rules match. | Cleveland | 2024 | Cody Rhodes vs. Solo Sikoa |
| 38 | SummerSlam 2025 East Rutherford, New Jersey Held at MetLife Stadium, this marked the first-ever two-night SummerSlam event in history. | East Rutherford | 2025 | Two-Night Event Extravaganza |