This review is prepared as part of the FAO Project “Environmental Impact Assessment (EIA) and monitoring in aquaculture”. The review provides a compilation, review and synthesis of existing EIA and environmental monitoring procedures and practices in aquaculture in the Asia-Pacific region, the largest aquaculture-producing region in the world. This review, as in other regions, gives special consideration to four areas related to EIA and monitoring in aquaculture including: (1) the requirements (2) the practice (3) the effectiveness and (4) suggestions for improvements. Australia, China, India, Indonesia, Japan, Malaysia, the Philippines, Thailand and Viet Nam are covered in some depth, and a brief overview is provided of EIA and monitoring in several other countries in the region that are in various stages of adoption and implementation of environmental impact assessment, monitoring and other environmental management measures for aquaculture.