Events in the year 1715 in Spain.

Events

• June 9 – King Philip, ruler of the Kingdom of Castile and the Kingdom of Aragon unifies the two governments into a single state, centralizing rule of a unified Kingdom of Spain.
• July 24 – 1715 Treasure Fleet: A Spanish treasure fleet of 12 ships, under General Don Juan Ubilla, leaves Havana, Cuba for Spain. Seven days later, 11 of them sink in a storm off the coast of Florida (some centuries later, treasure salvage is found from these wrecks).
• Date Unknown - Around this year, a breech loading firearm is made for Philip V of Spain.

Notable births

• February 27 – Mateo Aimerich, Spanish philologist (d. 1799)
• August 25 – Luis González Velázquez, Spanish painter (d. 1763)

Notable deaths

• February 4 – Martín de Ursúa, Spanish conquistador (b. 1653)