Patricia Bay ("Pat Bay" to locals) is a body of salt water which extends east from Saanich Inlet and forms part of the shoreline of North Saanich, British Columbia. It lies due west of Victoria International Airport. A municipal park covers most of its eastern shore except at the southern end which is home to a Canadian Coast Guard base, a seaplane port known as Victoria Airport Water Aerodrome, and two Canadian Government research facilities - the Institute of Ocean Sciences and the Pacific Geoscience Center.
In the 1900's there was a train track that connected to Sidney and Victoria. The Canadian National Railway controlled the track but later abandoned it in 1931. The track was moved south.