Atrium on Bay is a retail and office complex in Toronto, Canada. It was built on the former site of the Ford Hotel on the north side of Dundas Street West, extending from Yonge Street to Bay Street. The 14-floor building was built in 1981 with two floors of retail stores. As part of the PATH network, it has underground connections to Dundas subway station and the Toronto Bus Terminal located across Bay Street.
Atrium on Bay hosts the spacious flagship store of the Canadian photo retailer Black's Photography, an outlet of the Liquor Control Board of Ontario, the main prize claiming site for the Ontario Lottery and Gaming Corporation, Tourism Ontario, and the Land Registry Office for the City of Toronto. In early 2007, St. Louis Bar and Grill opened up on the north side. Other restaurants in the complex include Red Lobster and Spring Rolls.
Atrium on Bay was used a shopping mall in the Canadian TV drama Flashpoint. The interior was also used in the 1983 PBS TV movie Overdrawn at the Memory Bank.
The Canadian Imperial Bank of Commerce is a major tenant of Atrium on Bay.