The 2015 Southeast Asian Games, officially known as the 28th Southeast Asian Games, or the 28th SEA Games, and commonly known as Singapore 2015, was a Southeast Asian multi-sport event held by the city-state of Singapore from 5 to 16 June 2015, It was the fourth time the country hosted the games. Singapore had previously also hosted the games in 1973, 1983 and the 1993 editions.

SEA Games, officially known as the South East Asian Games, is a biennial multi-sport event involving participants from the current 11 countries of Southeast Asia. The games are under the regulation of the Southeast Asian Games Federation with supervision by the International Olympic Committee (IOC) and the Olympic Council of Asia (OCA). The SEA Games is one of the five subregional Games of the Olympic Council of Asia (OCA).