Amazon Cooperation Treaty Organization

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Amazon Cooperation Treaty Organization

Member states of ACTO
Abbreviation	ACTO
Established	25 February 1995 (1995-02-25)
Headquarters	Brasília, Brazil
Coordinates	15°50′50″S 47°53′45″W / 15.847357°S 47.895831°W / -15.847357; -47.895831
Membership	8 states  Bolivia  Brazil  Colombia  Ecuador  Guyana  Peru  Suriname  Venezuela
Official languages	Dutch English Portuguese Spanish
Secretary-General	Martin von Hildebrand
Website	otca.org

The Amazon Cooperation Treaty Organization (ACTO) (Portuguese: Organização do Tratado de Cooperação Amazônica (OTCA)) is an international organization aimed at the promotion of sustainable development of the Amazon Basin. Its member states are: Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname and Venezuela.

The Amazon Cooperation Treaty (ACT) was signed on 3 July 1978 and amended in 1998. ACTO was created in 1995 to strengthen the implementation of the Treaty. The Permanent Secretariat was later established in Brasilia in 2002.