Amazon Cooperation Treaty Organization
An intergovernmental organization that coordinates cooperation among the eight Amazon Basin countries to support sustainable development and implementation of the Amazon Cooperation Treaty.
Last updated August 31, 2026
Overview
The Amazon Cooperation Treaty Organization, commonly known as ACTO, is an intergovernmental organization established to strengthen cooperation among the countries that share the Amazon Basin. Its members are Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela. The organization works within the framework of the Amazon Cooperation Treaty, a regional agreement signed on 3 July 1978. The treaty established a basis for cooperation over the Amazon region, including the exchange of information, coordination of policies, and support for the sustainable development of the basin. Rather than operating as a commercial company or consumer-facing brand, ACTO functions as a multilateral institutional platform. Its work is directed toward governments and regional stakeholders, with emphasis on the environmental, social, scientific, and economic dimensions of Amazonian development. The treaty framework was amended in 1998, and the organization was created in 1995 to give the agreement a more effective and permanent institutional structure. A Permanent Secretariat was subsequently established in Brasília in 2002. The secretariat provides an administrative base for regional coordination and represents the organization in its continuing work. ACTO's geographic scope covers the territories and interests of the eight member states associated with the Amazon Basin. This gives it a role in facilitating dialogue on issues that cross national borders, such as rainforest conservation, sustainable use of natural resources, scientific cooperation, and regional development. Its mandate is based on cooperation among sovereign states rather than on supranational authority. International attention to ACTO increased around the 2023 Amazon Cooperation Treaty Organization Summit, hosted by Brazil in August 2023. Brazil announced the meeting in January of that year and invited representatives from the Democratic Republic of the Congo, the Republic of the Congo, and Indonesia to broaden discussion to other major tropical-forest regions, including the Congo Basin and the forests of Borneo and Sumatra. France was also invited because French Guiana gives France a territorial presence in the Amazon region. These invited countries were described as observers or prospective participants in the wider dialogue rather than as the eight treaty members. ACTO is therefore best understood as a regional cooperation institution, not an e-commerce marketplace or conventional commercial brand. Its public identity is associated with Amazon Basin diplomacy, sustainable development, environmental coordination, and implementation of the Amazon Cooperation Treaty.
History
The institutional history of ACTO begins with the Amazon Cooperation Treaty, signed on 3 July 1978 by Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela. The treaty created a framework for the participating states to cooperate in relation to the Amazon Basin and to pursue development approaches that recognized the region's shared geographic and environmental characteristics. The treaty's scope was regional rather than commercial. It provided a basis for communication and coordination among the governments whose territories form part of the Amazon Basin, while leaving authority with the member states. Its subject matter included cooperation connected with development, information exchange, and the management of common regional concerns. In 1995, the Amazon Cooperation Treaty Organization was created to strengthen implementation of the treaty. The organization supplied a more structured mechanism through which the treaty's objectives could be pursued and member governments could maintain ongoing institutional cooperation. The treaty was amended in 1998, further shaping the framework under which the organization operated. A Permanent Secretariat was established in Brasília in 2002. The creation of a permanent secretariat gave ACTO a continuing administrative center and reinforced Brasília's role as the organization's headquarters. From this institutional base, ACTO has been associated with regional coordination on sustainable development and Amazon-related cooperation. ACTO's membership consists of the eight states connected by the treaty: Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela. The organization is not a company, retailer, or product producer. Its function is diplomatic and policy-oriented, and its activities concern the shared interests of the Amazon Basin rather than the sale of goods or services. The organization received renewed international attention in connection with the 2023 ACTO Summit. Brazil announced in January 2023 that it would host the meeting in August. Invitations were extended beyond the eight member states to the Democratic Republic of the Congo, the Republic of the Congo, and Indonesia, reflecting an effort to connect Amazon cooperation with experiences from the Congo Basin and the forests of Borneo and Sumatra. France was also invited because its overseas department of French Guiana lies within the Amazon region. These invitations expanded the summit's geographic conversation while leaving the treaty's formal membership with the eight Amazon Basin countries.
- 2023Brazil hosts the ACTO Summit
Brazil hosts the 2023 summit and invites representatives from other major rainforest regions, including the Congo Basin and Southeast Asia.
- 2002Permanent Secretariat is established in Brasília
ACTO establishes its Permanent Secretariat in Brasília, Brazil.
- 1998Treaty framework is amended
The Amazon Cooperation Treaty is amended as the regional cooperation framework develops.
- 1995ACTO is created
The organization is established to strengthen implementation of the Amazon Cooperation Treaty.
- 1978Amazon Cooperation Treaty is signed
Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela sign the treaty establishing a framework for cooperation in the Amazon Basin.
Products and positioning
A multilateral regional institution focused on cooperation, sustainable development, and policy coordination across the Amazon Basin.
Flagship businesses
- Regional governmental coordination under the Amazon Cooperation Treaty
- Sustainable-development cooperation for the Amazon Basin
- Scientific, environmental, and policy dialogue among member states
- Summits and diplomatic forums concerning Amazon-region cooperation
Brand decisions
- 2023Broadened participation in the 2023 ACTO SummitStrategy
Brazil's planned 2023 summit was framed as an opportunity to connect Amazon Basin cooperation with other major rainforest regions.
What changed. Invitations were extended to the Democratic Republic of the Congo, the Republic of the Congo, Indonesia, and France, alongside the eight ACTO member states.
Aftermath. The initiative broadened the summit's international rainforest dialogue, while the formal treaty membership remained composed of the eight Amazon Basin countries.
Recent events
- 2023Brazil announces that it will host the 2023 Amazon Cooperation Treaty Organization Summit
Brazil announced in January 2023 that it would host the ACTO summit in August. The planned meeting was presented as a forum for the Amazon countries and invited representatives from other major tropical-forest regions.
Other - 2023ACTO invites representatives from the Congo Basin, Indonesia, and France to the 2023 summit
The Democratic Republic of the Congo, the Republic of the Congo, and Indonesia were invited to represent other major rainforest regions. France was also invited because it administers French Guiana, which is located in the Amazon region.
Other
Sources
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