Indonesia’s halal product assurance system provides strong legal certainty for halal integrity and Muslim consumer protection; however, ecological performance indicators remain insufficiently integrated into the substantive architecture of halal governance. This study aims to formulate a green halal paradigm integrating maqāṣid al-syarī‘ah, Islamic environmental ethics, and Indonesia’s Halal Product Assurance (JPH) regulation within a unified normative-regulatory framework. Using normative-doctrinal legal research, the study applies statutory, conceptual, and philosophical-normative approaches supported by a structured review of 27 documentary sources. Data were analyzed through content analysis, conceptual analysis, and normative legal reasoning. The findings show that green halal should not redefine the legal criteria of halal and haram, but should develop halal governance through a two-layer model: mandatory core halal assurance and complementary green halal sustainability assurance. Its originality lies in translating maqāṣid-based objectives and Islamic environmental ethics into measurable governance domains, including resource efficiency, waste management, sustainable packaging, supply-chain traceability, responsible sourcing, social accountability, and verifiable environmental claims. Practically, the framework proposes phased implementation through voluntary guidelines and sectoral pilots, verified supplementary assessment, and selective regulatory integration after empirical validation. BPJPH should coordinate implementation with LPHs, environmental and standardization institutions, industry actors, scholars, and consumer representatives. Future research should validate indicator relevance, weights, thresholds, auditability, costs, and SME readiness through Delphi studies, multi-criteria decision-making methods, and sector-specific pilot audits. Green halal therefore offers a measurable pathway from halal assurance toward halal sustainability assurance while preserving legal certainty and regulatory proportionality.