This paper conducts a comparative analysis of three cases - Indonesia, Thailand and Vietnam - to examine the distinctive features of Southeast Asian states’ involvement in peacekeeping. These cases provide representative insights into the motivations and experiences of regional states that joined UN peacekeeping operations at different historical junctures: Indonesia in the 1950s, Thailand in the 1990s, and Vietnam in the 2000s. By identifying the common and unique aspects of this engagement, the authors argue that Southeast Asian nations’ approaches to peacekeeping are deeply rooted in the values that underpin their foreign and domestic policies. Appealing to these values, Southeast Asian states contribute conceptual innovations to existing peacekeeping models, which are predominantly based on Western perspectives. By generalizing the peacekeeping experiences of Southeast Asian states, this paper fills a gap between broader publications that focus on Asian peacekeeping practices and single-country studies. The research underscores that Southeast Asian states, following a challenging period of decolonization and nation-building in the framework imposed by the Westphalian international relations system, have been trying to infuse their own approaches into the Westernized realm of international interaction. Since the 1950s, several regional states have participated in UN peacekeeping operations. The involvement of the Association of Southeast Asian Nations (ASEAN) in resolving the Cambodian conflict in the late 1980s and the Thailand - Cambodia settlement in 2008-2011 has stimulated the development of regional peacekeeping practices. By contributing to peacekeeping operations, Southeast Asian states aspire to enhance their regional and even global influence. In certain instances, their engagement in peacekeeping has ideological, cultural or religious motivations, or stems from specific foreign and domestic policy considerations.