• In geography, a bay or gulf is a collection of water that is surrounded by land on three sides. See Headlands and bays for more details.
• Bay is a color of horse coats.
• Bay is also a region in Somalia. See Bay, Somalia for more information.
• Bay is also a herb and the tree from which it comes: see bay leaf.
• Bay is also the distance between two supports in a vault.
• The Bay is a chain of fashion department stores in Canada.
• The Bay Area is an area of California.
• Bay is also a municipality in the province of Laguna in the Philippines. See Bay, Laguna

• The Aberdeen & Commonwealth Line named its ships after bays.