About ACEC-Ontario

We exist to promote and advance the business interests of our Member Firms and the value of the engineering work they do.

We exist to promote and advance the business interests of our Member Firms and the value of the engineering work they do.

Founded in 1975, the Association of Consulting Engineering Companies – Ontario is an association that advocates for a business and regulatory climate in the interests of our members in Ontario.

Much has happened in those 45 plus years of operation, most recently, on September 15th, 2020, we began a new chapter by formally changing our name from the Consulting Engineers of Ontario to the Association of Consulting Engineering Companies – Ontario (ACEC – Ontario). This new name better identifies us as an industry association representing engineering firms. It aligns our organization with the national-level association (ACEC-Canada) and the naming convention used by the vast majority of our provincial counterparts across Canada. This conveys unity, strength and consistency to our stakeholders.

We represent approximately 130+ consulting engineering firms that employ nearly 21,000 Ontarians. Member firms range in size from sole proprietorships to large multinational engineering firms. Our member firms provide a wide range of professional engineering services to government and private sector clients. As a sector, the accumulated gross revenues of engineering service firms across the country contribute north of $28 billion to the economy annually.

ACEC-Ontario is a member organization of the Association of Consulting Engineering Companies – Canada (ACEC-Canada) and International Federation for Consulting Engineers (FIDIC). When a company joins ACEC-Ontario, it automatically joins the ACEC-Canada and FIDIC.


We wouldn’t be here today without the support of our member firms. It is their dedication and effort that makes the work of the association possible.

Become a member today


Our Mission Statement

To promote and advance the business interests of our Member Firms and the value of the engineering work they do.

Our Vision

Our Member Firms prosper and are recognized for their influence and fundamental contributions to the social, environmental, and economic welfare of Ontario.

Our Core Values

  • Integrity
  • Trust
  • Collaboration
  • Diversity
  • Respect

Strategic Goals

Priority 1: Proactive Advocacy – To shape public policy, legislation, procurement and contracting practices to reflect member business interests and raise the profile of the sector.

Priority 2: Engagement that Creates Value – To achieve an actively engaged community that drives volunteerism and improves member retention.

Priority 3: Strengthen our Identity and Branding – To establish and promote an identity and brand that points to the future, enables fulfillment of our vision, and clearly differentiates us from other engineering associations.

To view ACEC-Ontario’s 2020-2023 Strategic Plan, click here.

Thank you to the organizations that support our community, our affinity partners and sponsors.