Slammiversary XV was a professional wrestling pay-per-view (PPV) event produced by Impact Wrestling. It took place on July 2, 2017 at the Impact Zone in Orlando, Florida. It was the thirteenth event under the Slammiversary chronology and the first event in the 2017 Impact Wrestling PPV schedule. The event included special appearances by TNA alums Shark Boy and James Mitchell, as well as members of American Top Team and El Hijo de Dos Caras.

In October 2017, with the launch of the Global Wrestling Network, the event became available to stream on demand.

Slammiversary featured professional wrestling matches involving different wrestlers from pre-existing scripted feuds and storylines. Wrestlers portrayed villains, heroes, or less distinguishable characters in the scripted events that built tension and culminate in a wrestling match or series of matches.

On the March 2, 2017, episode of Impact Wrestling, Alberto El Patrón debuted in Impact Wrestling, interrupting Bruce Prichard and Impact Wrestling World Heavyweight Champion Lashley in an attempt to insert himself into the Impact Wrestling World Heavyweight Championship picture. Lashley granted El Patrón a world title match. Later that night, El Patrón won the Impact Wrestling World Heavyweight Title over Lashley in controversial fashion. However, El Patrón relinquished the title the next night due to the controversial victory and faced Ethan Carter III in a world title number-one contenders match, which he won, becoming the number one contender in the process. On the April 20, 2017, episode of Impact Wrestling, Karen Jarrett announced that Global Force Wrestling and Impact Wrestling had officially merged including any related property. This led to May 11 El Patrón defeating Magnus to win the GFW Global Championship. Then on the June 1 episode of Impact Wrestling, El Patrón defeated Carter again this time for Patrón's GFW Global Champion and Carter opportunity to face Lashley at Slammiversary.

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