Toronto Harbour Commission Building, Beaux-Arts administrative building in South Core, Toronto, Canada

The Toronto Harbour Commission Building is a six-storey building erected in 1917 by Alfred Chapman and McGiffin for the Toronto Harbour Commission. Its exterior is clad in Indiana and Queenston limestone, and its ground floor now houses the Harbour Sixty Steakhouse.

The Toronto Harbour Commission Building was erected in 1917 for the joint municipal-federal Toronto Harbour Commission, to designs by Alfred Chapman and the firm of Clare V. and Robert B. McGiffin. It cost $247,000 to build and housed the commission and its successor agency PortsToronto, formerly the Toronto Port Authority. PortsToronto sold the building in 2017 for CA$96 million to Oxford Properties, which plans to fold it into a commercial office development called The Hub.

The ground floor has housed the Harbour Sixty Steakhouse, a steakhouse dining room set within the 1917 limestone structure. The building's name and its carved lettering recall the Toronto Harbour Commission, the joint municipal-federal agency that ran the port and commissioned the offices.

The ground floor now houses a steakhouse restaurant, while upper floors are used by various office tenants. Visitors can view the facade and public areas at street level, though the upper stories are not open to the public.

The building once stood right at the water's edge, but massive land reclamation projects pushed the shoreline far to the south. Today it sits well inland, a visible reminder of how the harbor's shape and infrastructure have changed over time.