Religion, Nationalism, and Identity Politics in Southeast Asia: Legitimacy, Pluralism, and Regional Order

Religion has returned to the center of International Relations debate after being treated for a long time as politically residual or analytically secondary. The article argues that older secularization assumptions are no longer sufficient for explaining contemporary global politics, especially in Southeast Asia, where religious identities remain deeply embedded in public life. Religion in this region is not merely private belief, but a historical force shaping nationalism, governance, social hierarchy, and regional interaction.

The central problem is that identity politics and religious nationalism are no longer limited to domestic elections or internal cultural debates. They now shape state legitimacy, public diplomacy, conflict narratives, and perceptions of regional stability. Religious identity becomes politically powerful because it can mobilize majorities, define minorities, and mark the symbolic boundaries of the nation.

Existing scholarship has shown that religion remains politically significant in Southeast Asia and that religious identities are often connected to ethnic formations and postcolonial nation-building. Studies of Indonesia, Malaysia, the Philippines, Myanmar, and Thailand have documented how religion can legitimize state projects, energize civil society, and sharpen communal conflict. This literature establishes that religion is a durable structure of political meaning rather than a fading cultural residue.

However, the article identifies a remaining weakness in the literature: existing studies often provide rich national case descriptions but do not fully theorize these patterns at the regional level. Many works treat religious nationalism mainly as a domestic ideological strategy, while giving less attention to how it affects interstate perception, regional security, and diplomatic positioning. The article argues that Southeast Asia cannot be explained through simple binaries such as secular versus religious or liberal versus illiberal.

The research gap lies in the limited integration of identity politics, religious nationalism, and regional stability within a constructivist reading of Southeast Asian international relations. Constructivism is useful because it treats identity, norms, and social meaning as constitutive of political behavior. Yet the article argues that constructivist analysis must pay closer attention to the historical layering of religion, ethnicity, colonial rule, and postcolonial legitimacy in Southeast Asia.

The article justifies its theoretical intervention by arguing that religion actively produces political categories through which state authority and social difference are interpreted. In Southeast Asia, states act within historically sedimented fields of religious symbolism, civilizational memory, and majoritarian expectation. Therefore, a region-sensitive constructivist framework is needed to explain how religious legitimacy, identity formation, and regional politics are connected.

The article is guided by questions about how identity politics and religious nationalism shape domestic stability and interstate relations in Southeast Asia. It asks how religious identity becomes mobilized as a source of power, resistance, or exclusion; why some state projects of moderation or harmony generate legitimacy while others produce backlash; and how colonial legacies and postcolonial nation-building continue to structure religion, ethnicity, and state authority.

The broader contribution of the article is to reposition Southeast Asia as a site of theoretical production rather than merely a source of illustrative cases. By centering the overlap of religion, ethnicity, and nationalism, the article develops a more precise discussion of legitimacy, state identity, pluralism, and regional stability. It argues that religion must be understood as a constitutive part of political order in Southeast Asia rather than as an occasional cultural variable.

This article employs a qualitative research design grounded in interpretive social inquiry and comparative regional analysis to examine how identity politics and religious nationalism are constructed, mobilized, and institutionalized in Southeast Asia. A qualitative approach is appropriate because the study focuses on meanings, narratives, symbols, and political claims that cannot be adequately captured through numerical measurement alone. The analytical framework is informed primarily by constructivist theory, especially its emphasis on identity, norms, and socially produced understandings of political order, while also incorporating scholarship on nationalism, religion in International Relations, and postcolonial state formation.

The data are drawn from academic literature, policy documents, constitutional and legal texts, public speeches, official government statements, reports from regional and international institutions, and credible secondary sources on religion, nationalism, and political development in Southeast Asia. Data collection was conducted through purposive and document-based selection, focusing on materials related to religious identity, state discourse, political legitimacy, and regional order. The units of analysis are discursive and institutional expressions of identity politics and religious nationalism, including state narratives, elite claims, legal formulations, and public debates. A qualitative coding framework was used to classify themes such as religious legitimacy, national identity, pluralism, exclusion, state authority, and regional implication. Trustworthiness was maintained through source triangulation, conceptual consistency, close reading, and alignment between the research questions, theoretical framework, and coding categories.

Religion and nationalism in Southeast Asia operate through a mutually constitutive relationship rather than through separate ideological or institutional domains. Political belonging is often framed through religious language, while religious identity gains greater political force when linked to the nation, moral order, and state legitimacy. Religion functions as an active structure through which citizenship, authenticity, and public order are articulated.

A major dimension of this relationship is the use of religion as a source of political legitimacy. Governments, ruling coalitions, and influential political actors often invoke religious values to strengthen public authority and present policy choices as morally grounded. Religious symbolism gives political power a sense of authenticity by connecting it to transcendent meaning, historical continuity, and collective obligation.

Religious nationalism also functions as a boundary-making process. It distinguishes insiders and outsiders within the national community by connecting political membership to dominant cultural and religious norms. In plural societies, this can create layered inclusion, where minorities may be formally recognized as citizens but symbolically positioned at the margins of national belonging.

The regional pattern becomes clear across different Southeast Asian cases. Indonesia, Malaysia, Myanmar, Thailand, and the Philippines each have different colonial histories, demographic compositions, and state-religion arrangements. Yet all show that religious identity has strong political force in shaping nationalism, legitimacy, and public order.

In Indonesia, the negotiation between pluralist state ideology and Islamic political aspiration creates a national identity that remains open but contested. Malaysia shows a more formalized connection between religion, ethnicity, and state legitimacy, especially through the relationship between Malay identity and Islam. Myanmar and Thailand demonstrate how Buddhist-majoritarian narratives can influence debates over citizenship, national security, and social order.

The Philippines, despite having a different colonial and religious trajectory, also shows how religion remains embedded in political legitimacy and moral authority. These examples indicate that Southeast Asia does not present one uniform model of religious nationalism. Instead, the region shows recurring entanglement between religion and nationalism across different institutional forms.

A persistent tension appears between pluralism as a constitutional or civic principle and majoritarian identity as a lived political force. Many Southeast Asian states formally support coexistence, religious freedom, or unity in diversity, but public discourse often privileges the faith tradition associated with the dominant historical community. This creates a hierarchy of belonging in which some groups appear naturally aligned with the nation while others are treated as conditional participants.

The article identifies several interconnected mechanisms of religious nationalism: religious legitimacy, boundary-making, state management of religion, and regional implication. Religious legitimacy validates authority, law, and policy through moral language. Boundary-making defines national identity through dominant religious-cultural markers. State management of religion shapes contestation, stability, and governance. Regional implication shows how religion and nationalism influence broader perceptions of order and legitimacy.

The analysis aligns with scholarship that challenges the assumption that religion has become marginal in modern political life. It extends this scholarship by emphasizing the regional significance of identity politics and the constitutive relationship between religion and nationalism. Religion is not treated merely as a resource used by political actors, but as a framework through which the nation is imagined and defended.

The theoretical implication is that mainstream International Relations approaches are limited when they treat religion as secondary to material interests, institutional design, or secular ideology. Southeast Asia shows that political order is shaped by sacred history, moral community, and majoritarian protection. Constructivism offers a better starting point because it treats belief, identity, and symbolic meaning as constitutive forces in state behavior and regional politics.

The governance implications are significant for pluralism, democratic stability, and minority protection. When political legitimacy is closely tied to dominant religious identity, governments may regulate public life in ways that privilege majority norms. This may appear stabilizing in the short term, but it can weaken equal citizenship by placing minorities in a position of symbolic vulnerability.

The article concludes that religious nationalism is both stabilizing and destabilizing. It can legitimize order and provide moral cohesion, but it can also intensify exclusion and deepen boundary-making when used in majoritarian terms. Further research should examine legal discourse, education policy, party competition, public rhetoric, digital media, and comparative differences between Muslim-majority and Buddhist-majority contexts.

Religion and nationalism in Southeast Asia are bound together through a political relationship that shapes legitimacy, belonging, and the management of diversity. The discussion has emphasized that religion is not a peripheral cultural variable, but a constitutive dimension of how national identity is imagined and how political authority is justified. Religious legitimacy strengthens state and elite claims by embedding power in moral language, while religious nationalism defines the symbolic boundaries of the nation by distinguishing majorities from minorities in uneven ways. Across different Southeast Asian settings, these processes operate through distinct institutional forms, yet they reproduce a broadly comparable pattern in which religion contributes to the ordering of public life. The tension between pluralism and majoritarian identity remains central because formal commitments to inclusion often coexist with hierarchical modes of recognition. Such dynamics help explain why identity politics continues to shape governance, public morality, and the political status of minority communities across the region. The broader significance of the discussion lies in clarifying that religious nationalism is neither episodic nor accidental, but a recurring mechanism in the production of political order in Southeast Asia.

The article contributes to the field by integrating constructivist theory, religion in International Relations, and Southeast Asian political analysis into a single framework for understanding identity politics and religious nationalism. Its main conceptual value lies in treating religion and nationalism as mutually constitutive rather than analytically separable, thereby moving beyond approaches that reduce religion to symbolism or instrumental mobilization. This perspective strengthens International Relations scholarship by challenging secular assumptions that continue to marginalize religion in explanations of political order and regional dynamics. It also contributes to Southeast Asian studies by repositioning the region as a site of theoretical refinement rather than simply a repository of empirical variation. The comparative discussion demonstrates that religious nationalism can only be understood adequately when colonial legacies, postcolonial state formation, and the social production of legitimacy are examined together. In that sense, the article offers a more context-sensitive account of how moral authority, national identity, and governance interact. The contribution is therefore both theoretical and regional, with implications for broader debates on pluralism, legitimacy, and the social foundations of political community.

Future research should extend the analysis through deeper comparative work across a wider range of Southeast Asian cases and through more focused examination of the institutional settings in which religious nationalism is reproduced. Greater attention to legal discourse, education systems, party competition, media narratives, and everyday bureaucratic practice would help clarify how majoritarian norms become normalized within different political orders. Comparative inquiry between Muslim-majority, Buddhist-majority, and more religiously mixed settings would also strengthen understanding of which mechanisms are regionally shared and which are context-specific. There is further need to examine how digital media transform the circulation of religious identity, moral panic, and symbolic exclusion in contemporary Southeast Asia. Such work would be especially important for understanding how identity politics evolves under changing communication infrastructures and democratic pressures. Closer engagement with questions of constitutional protection, minority rights, and pluralist governance would also enhance the practical relevance of future scholarship. Advancing this research agenda remains important for explaining how religion continues to shape political membership, state legitimacy, and regional stability in one of the world’s most diverse political regions.

Ahmed, I. (2011). The Politics of Religion in South and Southeast Asia. 13–24. https://doi.org/10.4324/9780203817131-5

Bagh, D. M., & Das, T. (2022). The changing dynamics of the political economy in South and Southeast Asia and their impact on the security of ethno-religious minorities: a case study of Bangladesh and Myanmar. Stosunki Międzynarodowe – International Relations. https://doi.org/10.12688/stomiedintrelat.17428.1

Bhangu, S., Provost, F., & Caduff, C. (2023). Introduction to qualitative research methods – Part I. Perspectives in Clinical Research, 14, 39–42. https://doi.org/10.4103/picr.picr_253_22

Chong, T. (2010). Religion and Politics in Southeast Asia. Sojourn: Journal of Social Issues in Southeast Asia, 25.

Hamayotsu, K. (2020). States, Religion, and Democracy in Southeast Asia: Comparative Religious Regime Formation.

Künkler, M. (2018). The bureaucratization of religion in Southeast Asia: Expanding or restricting religious freedom? Journal of Law and Religion, 33, 192–196.

Liow, J. (2016). Religion and Nationalism in Southeast Asia.

Neo, J., & Scharffs, B. (2021). Religious Nationalism and Religious Freedom in Asia: Mapping Regional Trends in a Global Phenomenon. Asian Journal of Law and Society, 8, 1–18.

Nurdiansyah, R. (2024). Religion, Nationalism, and Citizenship: Religion Majoritarian Approach in Southeast Asia. ULUL ALBAB Jurnal Studi Islam.

Yilmaz, I., & Morieson, N. (2022). Religious Populisms in the Asia Pacific. Religions.