Slammiversary (2015) was a professional wrestling pay-per-view (PPV) event produced by Total Nonstop Action Wrestling (TNA). It was live from Impact Zone, Orlando, Florida. It was the eleventh event under the Slammiversary chronology, and the first event in the 2015 TNA PPV schedule. This was the first Slammiversary pay-per-view to feature a King of the Mountain match since Slammiversary 2009. It was also the first King of the Mountain match in which the winner will be crowned the TNA King of the Mountain Champion.

Slammiversary followed four straight days of TNA taping future episodes of Impact Wrestling. Due to the episodes set to air after the PPV, the live Slammiversary featured Taryn Terrell as the TNA Knockouts Champion even though she had already lost the title and Ethan Carter III being billed as the number one contender to the TNA World Heavyweight Championship, despite already having won the title. In addition, Austin Aries and Davey Richards wrestled for the right to choose a stipulation for a match that had already taken place.

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 culminated in a wrestling match or series of matches.

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