- APO21
- 21 member economies of the Asian Productivity Organization: Bangladesh, Cambodia, the Republic of China, Fiji, Hong Kong, India, Indonesia, Islamic Republic of Iran, Japan, the Republic of Korea, the Lao PDR, Malaysia, Mongolia, Nepal, Pakistan, the Philippines, Singapore, Sri Lanka, Thailand, Turkiye, and Vietnam.
- Asia27
- APO21 plus Afghanistan, the Kingdom of Bhutan (Bhutan), Brunei Darussalam (Brunei), the People’s Republic of China (China), the Maldives, and Myanmar.
- Asia33
- Asia27 plus GCC countries, consisting of Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, and the United Arab Emirates (UAE).
- East Asia
- the Republic of China, Hong Kong, Japan, the Republic of Korea, Mongolia, the People’s Republic of China.
- SAARC (South Asian Association for Regional Cooperation)
- Afghanistan, Bangladesh, the Kingdom of Bhutan, India, the Maldives, Nepal, Pakistan, and Sri Lanka.
- ASEAN (Association of Southeast Asian Nations)
- Association of Southeast Asian Nations: Brunei, Cambodia, Indonesia, the Lao PDR, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam.
- ASEAN6
- Brunei, Indonesia, Malaysia, Philippines, Singapore, Thailand.
- CLMV
- Cambodia, Lao PDR, Myanmar, Vietnam.
- GCC (Gulf Cooperation Council)
- Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, and the UAE.
- EU15
- 15 member economies of the European Union prior to enlargement; Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Netherlands, Portugal, Spain, Sweden, and the United Kingdom.