The 2015 Indian Ocean Island Games, officially known as Jeux des îles de l'océan Indien Réunion 2015 or simply JIOI Réunion 2015, was the 9th edition of this multi-sport event for athletes representing the National Olympic Committees of Indian Ocean island nations.

Over 2,000 athletes, from 7 countries, participated in the 2015 Indian Ocean Island Games.

[2] The Comoros were to participate but withdrew, protesting the waving of the French flag and singing of the French national anthem for the Mayotte team.

[3] A total of 14 sports were represented in the 2015 Indian Ocean Island Games.

[4] *   Host nation (Réunion)