thumb|320px|right|Nestucca Bay aerial view looking south
Nestucca Bay is a bay formed by the confluence of the Nestucca River and the Pacific Ocean in northwest Oregon in the United States. It is near the town of Pacific City, which is in southwestern Tillamook County, about south of Cape Lookout. The bay is a bar-built estuary and totals in area.
The Nestucca and Little Nestucca rivers enter the bay.