Several countries have developed STEM education to boost global competitiveness. Studies on the implementation of STEM have revealed that educators and curriculum developers employ a variety of frameworks. These variances highlight the need for educators in the ASEAN community to have a shared understanding of STEM implementation to guide their teaching practice. We analyzed the literature on STEM implementation to create a knowledge base that would better guide policymakers and educators. The initial literature search identified 988 studies, but only 11 articles met the inclusion criteria for selection. We report on STEM education practices in ASEAN countries, their implementation status, and their impact on learners. We also discuss the geographical and practical gaps and highlight critical areas for future inquiries.