After the establishment of the ASEAN Community, on 8 August 2510 and had a country in Southeast Asia, the five remaining countries. Has filed its intention to participate as a member of ASEAN. The five ASEAN countries, which have joined at different times as a member of ASEAN.
- No. 6 Brunei Darussalam. He is a member of ASEAN on 8 January 2527.
- No. 7 Socialist Republic of Vietnam. He is a member of ASEAN on 28 July 2538.
- No. 8 People's Democratic Republic of Laos. He was held on 23 July 2540.
- No. 9 Myanmar. He was held on 23 July 2540 (with the laos).
- No. 10 Cambodia. He was held on 30 April 2542.