What is PEO?

Established on June 14, 1922, Professional Engineers Ontario (PEO) is the licensing and regulating body for professional engineering in the province.

PEO regulates the practice of professional engineering and governs its members to serve and protect the public interest by ensuring all professional engineers meet rigorous qualifications for licensing and that only properly qualified individuals practise engineering.

As part of its mandate, PEO also establishes, maintains and develops: standards of knowledge and skill; standards of practice for the profession; standards of professional ethics; and promotes public awareness of its role. 


Acts, Regulations and By-laws

Under the Professional Engineers Act, a provincial statute, PEO is responsible for the licensing and discipline of licence holders practising professional engineering and companies providing engineering services.

Code of Ethics

PEO’s Code of Ethics is a basic guide for professional conduct and imposes duties on practitioners, with respect to society, employers, clients, colleagues (including employees and subordinates), the engineering profession and him or herself.

P.Eng. Seal

The professional engineer’s seal is the distinctive mark of the professional engineer and must be used to identify all work prepared by, or under the direct supervision of, a professional engineer.

Strategic Plan

PEO’s strategic plan provides the direction for PEO Council to set policies and goals to guide the association.



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