This document provides an overview of marketing authorization procedures and premarketing requirements for drug product registration in Southeast Asian countries. It discusses the regulatory framework in the ASEAN region and details the marketing authorization processes in major Southeast Asian countries like Singapore, Malaysia, Thailand, Indonesia, and the Philippines. The key steps involved are application submission, evaluation, and the regulatory decision. Requirements like dossier format, samples, certificates, and administrative documents are also summarized. Finally, some regulatory challenges around GMP compliance, labeling requirements, authorization timelines, and country-specific rules are highlighted.