The Ontario Association for Impact Assessment (OAIA) was founded in 1994 as a registered not-for-profit organization focused on the practice of impact assessment in Ontario. OAIA draws on the strength of its voluntary membership of researchers, practitioners, and users of various types of impact assessment. OAIA members come from diverse disciplines and professions across private and public sectors at practitioner and decision-making levels. Sectors represented include federal, provincial, territorial, municipal and Indigenous government, engineering, consulting, law, health, education, academic, not-for-profit, finance, students, and private citizens. Members from Indigenous groups and organizations include community leaders, Indigenous knowledge holders and environmental stewards.
L’Association québécoise pour l’évaluation d’impacts (AQÉI) est une organisation à but non lucratif dont l’objectif est de regrouper toute personne, professionnelle ou non, intéressée par l’évaluation d’impacts et la participation publique, et à l’utilisation de ces outils dans le processus de planification et de prise de décision.
Established in 2024, the Atlantic Canada Association for Impact Assessment (ACAIA) is a member-based professional association of impact assessment practitioners. ACAIA's goal is to improve the quality of impact assessment (IA), including processes, methods, and results, and to promote its effective use to support better planning and decision-making.