AITI participates in various regional sectoral body as well as specialised agencies of key international organisations, including the Association of Southeast Asian Nations (ASEAN), the Asia-Pacific Economic Cooperation (APEC), the United Nations (UN). Such sectoral bodies and specialised agencies include:
- ASEAN Telecommunications Regulators' Council (ATRC).
- ASEAN Digital Seniors Officials Meeting (ADGSOM).
- ASEAN Data Protection and Privacy Forum (ADPPF).
- ASEAN Digital Ministers Meeting (ADGMIN).
- APEC Telecommunications and Information Working Group (APECTEL).
- APEC Telecommunications and Information Ministerial Meeting (APECTEL MIN).
- Asia Pacific Telecommunity (APT).
- International Telecommunications Union (ITU).
- Universal Postal Union (UPU).