Boat Quay is a historical quay in Singapore which is situated upstream from the mouth of the Singapore River on its southern bank. It spans from the shophouses near UOB Centre, stretching along one bank of the Singapore River, all the way till Elgin Bridge.

It was the busiest part of the old Port of Singapore, handling three-quarters of all shipping business during the 1860s. Because the south of the river here resembles the belly of a carp, which according to Chinese belief is where wealth and prosperity lay, many shophouses were built, crowded into the area.