The “Sub-regional Consultation Teleworkshop on Developing a Plan of Activity for Transboundary Fisheries Resources” was organized by the SEAFDEC Training Department (SEAFDEC/TD) from 27 to 28 August 2020 via Google Meet platform at SEAFDEC/TD’s office, Samut Prakan, Thailand. This Teleworkshop focused to develop a plan of activities for transboundary fisheries resources on two (2) main sub-regions as the Gulf of Thailand and Sulu-Sulawesi Seas. There were 37 participants (22 males and 15 females) who are representatives from SEAFDEC Member Countries, resource persons, and SEAFDEC Departments attended in this Teleworkshop. The updated transboundary fisheries resources issues in the Gulf of Thailand and the Sulu-Sulawesi Seas and draft Plan of Activity for the years 2021-2024 through sub-regional working groups for the Gulf of Thailand and the Sulu-Sulawesi Seas were outputs from this Teleworkshop.