| Grizzly Bay | |
| Coords: | 38.1167°N -124°W |
| Pushpin Map: | United States San Francisco Bay Area#USA California#USA |
| Type: | Bay |
| Rivers: | Suisun Slough, Cordelia Slough, Sacramento River and San Joaquin River |
| Oceans: | Pacific Ocean |
| Countries: | United States |
Grizzly Bay is a baylet of the San Francisco Bay, and an extension of Suisun Bay, which dips into Solano County, California. Grizzly Bay contains many sloughs, wildlife areas, and islands such as Grizzly Island, Joice Island and Morrow Island. It is also home to the Fifth Reserve Fleet, which is docked off the coast of Benicia.
Suisun Slough and Cordelia Slough empty into Grizzly Bay.