The 2011 Southeast Asian Games (, SEA Games 2011), officially known as the 26th Southeast Asian Games, was a Southeast Asian multi-sport event held in Jakarta and Palembang, Indonesia. It was Indonesia's fourth time to host the Southeast Asian Games, and its first since 1997. Previously, Indonesia also hosted in 1979 and 1987. The capital city of Jakarta hosted all three of the previous Games prior to this. Palembang became the third SEA Games non-capital host city, after Chiang Mai (1995) and Nakhon Ratchasima (2007), both in Thailand. Around 5,965 athletes from 11 participating nations participated at the games which featured 545 events in 44 sports. The biggest competitor, sports, and events in Southeast Asian Games history.