Tillamook may refer to:
Places:
- Tillamook County, Oregon, United States
- Tillamook, Oregon, a city, the seat of Tillamook County
- Tillamook River, United States
- Tillamook Bay, a bay in the northwestern part of Oregon
- Tillamook Head, a natural feature of the Oregon Coast
- Tillamook State Forest, a forest in Oregon
- Tillamook Rock Light, a lighthouse on the Oregon Coast
- Tillamook Air Museum, an aviation museum in Oregon
Other:
- Tillamook (tribe), a Native American tribe of western Oregon, United States
- Tillamook language, an extinct language
- Tillamook Burn, a series of forest fires in Oregon
- Tillamook Cheddar (dog), an American Jack Russell terrier known for her paintings
- Tillamook County Creamery Association, makers of dairy products sold under the "Tillamook" brand name
- Tillamook, a fictional version of the aforementioned Native American tribe.
- P55C, Tillamook, a family of Pentium MMX mobile computer processors from Intel
- USS Tillamook, the name of more than one United States Navy ship