International Association for Impact Assessment

Earth Day

22 April

IAIA24 Dublin

Final program now available

New FasTips available

Leadership in Impact Assessment


The leading global network on impact assessment

Impact assessment, simply defined, is the process of identifying the future consequences of a current or proposed action. IAIA is the leading global network on best practice in the use of impact assessment for informed decision making regarding policies, programs, plans and projects. Members of IAIA believe that impact assessment is a practical tool for helping meet today's needs without compromising the opportunities of future generations. Our members are our greatest asset.

IAIA Membership


Join IAIA members from over 120 nations in this inter-disciplinary network of individuals and organizations.

IAIA Events


IAIA's annual conferences and regional meetings promote lively exchange and learning opportunities.

IAIA Publications & Resources


IAIA's publications, trainings, and resources share best practices in the field of impact assessment.

IAIA Affiliates


Operating in 17 countries, IAIA Affiliates are independent organizations promoting impact assessment regionally.

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In the news

In the news

Environmental stories from around the globe this week

Environmental Professionals Day

Environmental Professionals Day

In the news

In the news

Environmental stories from around the globe this week

Journal:  Best Paper collection

Journal: Best Paper collection

Celebrating over a quarter century of IAPA

IAIA Mission, Vision & Values

IAIA is an organization with a voluntary membership of professionals from a diverse array of interests and organizations, all of whom are concerned with environmental stewardship and sustainability. Collectively, our goal is to protect, not harm, the earth and its environments and peoples.


The leading global network on impact assessment

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