Mud Bay is an American employee-owned pet store based in Olympia, Washington, with locations throughout the Pacific Northwest.

[5] The owners soon re-spelled the business to "Mud Bay Granary", referencing the storage building for grain.

[10] In 2015, Mud Bay announced that it would start an employee-stock ownership plan for its employees, effectively making it an employee-owned company.

On August 20, 2015, the owners and employees signed a "declaration of worker ownership" at the company's annual meeting at Green River Community College.

For a few years after that, many of the company's decisions were made by a team called "The 20", most of whom were elected by employee-owner peers.