| Éternité Bay | |
| Image Bathymetry: | Carte Baie Eternite.PNG |
| Location: | Rivière-Éternité, Quebec, Canada |
| Coordinates: | 48.3064°N -70.3203°W |
| Part Of: | Saguenay River |
| Inflow: | Éternité River |
| Agency: | Sépaq |
| Length: | 1km (01miles) |
| Width: | 2.5km (01.6miles) |
| Pushpin Map: | Canada Quebec |
| Pushpin Label Position: | top |
| Pushpin Mapsize: | 220 |
Éternité Bay (French: '''Baie Éternité''', meaning Eternity Bay) is a bay located south of the Saguenay Fjord at Rivière-Éternité, Quebec, Canada. It is part of Saguenay Fjord National Park.
Perpendicular to Saguenay River, it is 1km (01miles) wide by 2.5km (01.6miles) long. The Éternité River drains into it at the head of the bay.[1]
In front of Éternité Bay, the Saguenay fjord reaches its maximum depth there of 472m (1,549feet).[2]
Two capes are at the mouth of the bay along the Saguenay: Cap Trinité (411m (1,348feet)) to the northwest, Cap Éternité (454m (1,490feet)) at the South-East.
On Cap Trinité is the statue of Notre-Dame-du-Saguenay.