The Aomori Bay (青森湾, Aomori-wan) is a bay located north of the island of Honshu, in Japan.

It is considered to be part of the larger Mutsu Bay.

The bay is bordered by the Tsugaru Peninsula to the west and the harbor of Aomori to the south.

Emplectonema kandai is a bioluminescent marine ribbon worm found in Aomori Bay at a depth of 35–40 meters, and coiled up on Chelyosoma sea squirts.

[2] The bay provided resources for the Jōmon people living at the settlements along its coastline, such as the Sannai-Maruyama Site.