The escalating environmental crises confronting the global community necessitated a paradigm shift in environmental governance, moving beyond state-centric approaches to recognize the growing influence of non-state actors. This study comprehensively examined the roles and impacts of four key categories of non-state actors, civil society organizations, Indigenous peoples, multinational corporations, and international non-governmental organizations, in shaping environmental protection outcomes across multiple levels of governance. Using a qualitative case study methodology and thematic analysis of secondary data from 45 peer-reviewed journal articles, institutional reports, and policy documents published between 2020 and 2026, the study analyzed the strategic engagement of these actors within international environmental frameworks and national policy contexts. The findings revealed that civil society organizations (CSOs) increasingly functioned as co-governance partners, contributing technical expertise to policy formulation, implementation, and oversight while navigating restrictive political environments through pragmatic engagement strategies. Indigenous peoples demonstrated that knowledge bridging across cultural contexts fostered solidarity and strengthened ecological stewardship practices while supporting self-determination through traditional governance systems. Multinational corporations exhibited heterogeneous environmental strategies, transitioning from reactive compliance toward proactive sustainability integration driven by reputational pressures, regulatory imperatives, and stakeholder expectations. International non-governmental organizations (INGOs) deployed sophisticated advocacy mechanisms by aggregating community concerns, exchanging technical knowledge, and mobilizing dispersed interests to influence environmental governance networks. The study concluded that synergistic collaboration among these non-state actors, rather than isolated actions, offered a promising pathway toward transformative environmental governance, with important implications for policy design, institutional reform, and multi-stakeholder partnership frameworks.
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SUBMITTED: 03 July 2026
ACCEPTED: 01 September 2026
PUBLISHED:
3 September 2026
SUBMITTED to ACCEPTED: 60 days
DOI:
https://doi.org/10.53623/sein.v3i2.1285