- North Pacific Ocean1
- Northern America, , (Area)1
- Norwalk, Town of Norwalk, Fairfield County, Connecticut, United States1
- Oaxaca, Oaxaca, Mexico, (Administrative Boundary)1
- Olympia, Washington, United States, (Populated Place)1
- Oregon Coast Aquarium, Oregon, United States, (Spot)1
- Oregon Coast, Oregon, United States1
- Oregon State University, Oregon, United States, (Spot)1
- Owyhee River, Oregon, United States, (Hydrographic)1
- Pacific Northwest, United States1
- Panama, , Panama, (Administrative Boundary)1
- Panamint Valley, California, United States, (Hypsographic)1
- Parrett Mountain, Oregon, United States, (Hypsographic)1
- Pender Island, British Columbia, Canada, (Populated Place)1
- Pendleton, Oregon, United States, (Populated Place)1
- Peru, , Peru, (Administrative Boundary)1
- Philomath, Oregon, United States, (Populated Place)1
- Picture Gorge, Oregon, United States, (Hypsographic)1
- Puerto Rico, , Puerto Rico, (Administrative Boundary)1
- Quinault Reservation, Washington, United States, (Administrative Boundary)1