Is the individuals-with-significant-control register available to the public in Ontario?

No. In Ontario, the individuals-with-significant-control register is kept privately by the corporation itself, as part of its own corporate records, rather than filed with a government registry that members of the public can search. This is different from certain other jurisdictions that have moved toward publicly searchable beneficial-ownership registries for some categories of corporations; Ontario's Business Corporations Act regime keeps the register private, with access limited to specific categories of people and bodies rather than the general public.

Those with a right to request access generally include certain government regulators and law enforcement carrying out legitimate functions, along with the corporation's own shareholders and creditors, subject to restrictions on using the information for unrelated purposes. A member of the public, a journalist, or a competitor doesn't have a legal right to demand a look at a private Ontario corporation's ISC register simply because it exists.

This distinction matters if you're comparing Ontario's rules to what you may have read about beneficial-ownership transparency initiatives elsewhere — the underlying idea of identifying real controlling individuals is similar, but Ontario hasn't made the register itself a publicly searchable database.