Bank Street is the major north-south road in Ottawa, Ontario, Canada. It runs south from Wellington Street in downtown Ottawa, and runs south through the neighbourhoods of Centre Town, the Glebe, Ottawa South, Alta Vista , Hunt Club , and then through the towns of Blossom Park, Leitrim , South Gloucester , Greely, Spring Hill , and Vernon before exiting the city limits at Belmeade Road.

Bank Street made up much of Ontario provincial highway 31 before it was downloaded in 1998 (all of it south of Heron Road). Currently it is also known as Regional Road 31. Bank Street is also known as Metcalfe Road south of its junction with Conroy Road.

Between Gloucester Street and Frank Street in downtown, Bank Street is a shopping district known as the "Bank St Promenade" and the street is lined with markers showing this distinction. There is also a shopping district in the Glebe on Bank Street from 5th Avenue to Powell Avenue. Bank Street is home to Lansdowne Park where the Ottawa Renegades and the Ottawa 67's play. Further south, Bank Street is home to the Billings Bridge Plaza and the South Keys shopping centre .

Bank Street north of Riverside Drive is a historic urban arterial road, with many pedestrians and significant parking issues, hence the flow is generally very slow. South of Riverside to north of Leitrim Road , Bank Street turns into a more modern four-lane (or five-lane) urban arterial, which flows much better despite the 50 km/h (30 mph) speed limit on the northern half and 60 km/h (about 40 mph) from South Keys southward. South of Leitrim, it is a rural two-lane highway.

Contrary to popular belief, the street is not named after the Bank of Canada headquarters at the corner of Bank and Wellington. The street name dates back to the 19th century, whereas the bank was founded in 1934. It's believed that the road was named after the "bank" of the Ottawa river, that it reaches on its northern edge.

There is also a Bank Street in Wollongong. It is a small street adjoining Church Street , which goes from McCabe Park in the west to the beach in the east.