OSFI, FCAC, FINTRAC, and the provincial securities regulators.
Canadian financial services are supervised at the federal level by the Office of the Superintendent of Financial Institutions (OSFI) for prudential matters, the Financial Consumer Agency of Canada (FCAC) for consumer protection, and the Financial Transactions and Reports Analysis Centre of Canada (FINTRAC) for anti-money-laundering supervision under the Proceeds of Crime (Money Laundering) and Terrorist Financing Act (PCMLTFA).
Securities matters are provincial. Ontario is supervised by the Ontario Securities Commission (OSC), Quebec by the Autorite des marches financiers, British Columbia by the BCSC, and so on. OSFI's Guideline E-23 on Model Risk Management has been the de-facto starting point for any regulated firm operating an AI model in Canada, and is the guideline the Veetso governance system maps to most directly.