Whitesand Lake is a lake in Thunder Bay District, Ontario, Canada, part of the Hewitson River system.

Whitesand Lake is just north of Highway 17, about 9 kilometres (6 mi) east of the community of Rossport and 8 kilometres (5 mi) west of the community of Schreiber.

It is shaped roughly like the letter "H", with an elongated and fatter lower right arm.

A campground of Rainbow Falls Provincial Park is on the south side of Whitesand Lake near the outflow to the Hewitson River.

This Northern Ontario geographical article is a stub.