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.