The 2014 SummerSlam was the 27th annual SummerSlam professional wrestling pay-per-view (PPV) and livestreaming event produced by WWE. It took place on August 17, 2014, at Staples Center in Los Angeles, California for the sixth and final consecutive year. This was also the first SummerSlam event to air on WWE's livestreaming service, the WWE Network, which launched in February. It was also the first WWE pay-per-view to incorporate the new WWE logo but it would not be used on air and on the turnbuckle pads until the next night on Raw. This would also be the last WWE pay-per-view to feature the championships with the scratch logo as all were updated with the new logo also on the following night's Raw.

Eight professional wrestling matches were scheduled on the event's main card and one match took place on the Kickoff pre-show, which was streamed on the WWE Network. The main event saw Brock Lesnar defeat John Cena to win the WWE World Heavyweight Championship for a fourth time. This was the first of six consecutive SummerSlams in which Lesnar competed in the main event match. In other prominent matches, Seth Rollins defeated Dean Ambrose in a lumberjack match, Stephanie McMahon defeated Brie Bella, and Roman Reigns defeated Randy Orton. The event had 147,000 buys (excluding WWE Network views), down from the previous year's 296,000 buys.