IUCN Southeast Asia (SEA) Group comprises Brunei, Cambodia, East Timor, Indonesia, Lao PDR, Malaysia, Myanmar, Philippines, Singapore, Thailand, Viet Nam. Currently, SEA Group has offices in the following countries:
- Lao PDR
- Viet Nam
In the countries that IUCN doesn't have an office, the works are implemented through partnership with national and local agencies and organisations.