Welcome to IUCN US Fund’s new website!

United for Nature

The International Union for the Conservation of Nature is the world’s conservation network. We span the globe—and impact virtually every major environmental challenge facing humanity.

COMPREHENSIVE AND CONNECTED

IUCN brings together civil society and government officials, conservation professionals, scientists, Indigenous groups, and youth from more than 160 countries. We embody the urgency, hope, and possibility that result when individuals of goodwill unite for nature.

IUCN - World Conservation Congress

IUCN World Conservation Congress

Abu Dhabi, United Arab Emirates | Oct. 9-15, 2025

This quadrennial event is the world’s largest gathering of nature conservation experts, leaders, and decision-makers. Our 2025 Congress will help shape national and global priorities around vital issues related to conservation and climate change for years to come.

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Conservation in Action

WHAT WE DO

Convening

Stronger Together

 IUCN convenes leaders who set the agenda for global conservation. No other organization possesses such an extensive network spanning the conservation field, or uses them as effectively to catalyze tangible, durable impact.

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Science

Influential Information

IUCN originates and activates some of the most influential conservation science in the field. Our Commissions include more than 17,000 scientists, analysts, researchers, experts, advocates, policymakers, and project leaders whose combined expertise constitutes the world’s largest conservation knowledge base.

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Policy

Strategic Policymaking

 IUCN has led the charge for transformative environmental policymaking since 1972, when we became the official advisor on nature under the World Heritage Convention. IUCN motions have resulted in more than 1,450 Resolutions and Recommendations, which serve as the basis for influencing conservation policy at the species, site, national, and global levels.

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Reach

Deep Understanding, Robust Solutions

 IUCN’s reach and influence extend to every corner of the world. Participation in IUCN gives diverse stakeholders the opportunity to see themselves as integral members of a worldwide movement, and to bring their experiences and perspectives to bear on our efforts to achieve shared goals.

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By the Numbers

Our Network and Impact

A TRUE UNION
1,400+
Our more than 1,400 Members are the heart of the organization; they include NGOs, state and government agencies, Indigenous organizations, scientific and academic institutions, and business associations.
BRAIN POWER
17,000
Our network includes more than 17,000 Commission members—volunteer scientists, analysts, researchers, experts, advocates, and policymakers who constitute the world’s leading conservation brain trust.
IMPACT INVESTMENTS
$X.X Billion
IUCN members are engaged in conservation projects representing an investment of more than [$X] billion worldwide.

Strategic Vision

Unite for Nature: On the Path to 2045

A 20-Year Strategic Vision

PARTNERS & DONORS

Philanthropic Support

For more than 75 years, philanthropic partners have played a vital role in helping our Union forge vital connections and drive meaningful projects that benefit nature and the environment.