The Project Coordinating Unit (PCU) of the Fisheries Refugia Project organized The Forth Regional Scientific and Technical Committee Meeting (RSTC4) on 22 July 2021 via the Zoom platform. This meeting is one of the regional activities under the SEAFDEC/UNEP/GEF Project on Establishment and Operation of a Regional System of Fisheries Refugia in the South China Sea and the Gulf of Thailand. There were more than thirty people who are key participants as National and Scientific and Technical Focal Point from six participating countries, including Cambodia, Indonesia, Malaysia, Philippines, Thailand, and Viet Nam through the regional experts from various institution as well as Technical Officer from SEAFDEC/TD attended to this Meeting. The highlighted topics for Meeting is to update on the progress of project activities at the national level and regional level, as well as, discuss on the issues and challenges related to the project implementation. The meeting also discusses on the strategic plan towards 2022.