The Union Station Bus Terminal is the central intercity bus terminal in Toronto, Ontario, Canada. It is located in Downtown Toronto on the second floor of the south tower of CIBC Square, on the northeast corner of Bay Street and Lake Shore Boulevard. The terminal currently serves GO Transit regional buses as well as Coach Canada, Greyhound Lines and Ontario Northland long-distance bus services, among others. Owned by the provincial Crown agency Metrolinx, the terminal is connected by pedestrian walkways to the adjacent Union Station, Canada's busiest transportation hub.

CIBC Square is an office complex in the South Core neighbourhood of Toronto, Ontario, Canada. The complex, located on Bay Street south of Front Street, is a joint development of Ivanhoé Cambridge and Hines. It serves as the new global operational headquarters for the Canadian Imperial Bank of Commerce (CIBC), consolidating approximately 15,000 staff from several CIBC-tenanted buildings in the Greater Toronto Area, including its existing headquarters at Commerce Court. The complex also includes the Union Station Bus Terminal constructed on behalf of Metrolinx for GO Transit and other inter-city bus services, connected directly to Union Station. The complex will also include a one-acre park elevated over the rail corridor.