The Ontario Association for Impact Assessment is a forum for advancing innovation, development, and communication of best practice in impact assessment through the exchange of ideas and experiences among its members, and with other organizations with compatible interests.

OAIA seeks to:

• improve the practice of impact assessment to better meet the needs of the 21st century, particularly with respect to its use a tool for achieving sustainable development objectives
• develop partnerships with other organizations and institutions involved in impact assessment
• enhance multi-disciplinary cooperation in impact assessment
• expand professional development opportunities for impact assessment practitioners.

OAIA activities and services include

• organizing events that focus on important developments in the field of impact assessment
• promoting research and training in impact assessment
• promoting public understanding of impact assessment
• encouraging the development of improved approaches and methods for integrating impact assessment into society's planning, decision-making and management processes
• contributing, on behalf of members, to public policy discussions related to the role of impact assessment in Ontario and Canada.