Despite being minnows on the world stage, Thailand and the newly independent countries of Southeast Asia embraced sport during the Cold War as a means of nation and region building. This essay examines the political dimensions of the South East Asia Peninsular Games—the precursor of today’s Southeast Asian Games—founded in 1959 by US ally Thailand. This event reflected and reinforced the Cold War culture of Thailand and Southeast Asia. The games embodied motifs of regional friendship and antagonism between the “free” anti-Communist and neutralist nations of peninsular Southeast Asia; domestically, they embodied key themes in the domestic Cold War culture of Thailand, including nationalism, developmentalism, the revival of the monarchy, and militarization. This essay examines the Thai military junta’s objectives in founding the event, the effectiveness of the inaugural South East Asia Peninsular (SEAP) Games, and the cultural and semiotic features that reinforced the games’ major themes.