Goulais Bay is a bay of Ontario in Canada. It is part of Whitefish Bay which in turn is a large bay of Lake Superior. Goulais Point, on the southernmost tip of the peninsula that separates the bay from Batchawana Bay just to the north and from Whitefish Bay to the west, marks the northern entrance of Goulais Bay. North Gros Cap is the rock point that forms the bay's southern limit.

The dispersed rural community of Goulais Bay is near the mouth of the Goulais River that empties into the bay's east side. On the western shore of the bay is the community of Goulais Mission.

• Unorganized North Algoma District

• Media related to Goulais Bay at Wikimedia Commons