Tillamook River

Tillamook River
Lower Tillamook River at Oregon Route 131 bridge
Country	United States
State	Oregon
County	Tillamook County
Source	Northern Oregon Coast Range
- location	low coastal hills southwest of Tillamook
- elevation	744 ft (227 m)
- coordinates	45°21′50″N 123°54′58″W / 45.36389°N 123.91611°W / 45.36389; -123.91611
Mouth	Tillamook Bay
- elevation	0 ft (0 m)
- coordinates	45°29′15″N 123°54′06″W / 45.48750°N 123.90167°W / 45.48750; -123.90167Coordinates: 45°29′15″N 123°54′06″W / 45.48750°N 123.90167°W / 45.48750; -123.90167
Length	17 mi (27 km)
Basin	61 sq mi (158 km2)
Location of the mouth of the Tillamook River in Oregon

The Tillamook River is a stream, about 17 miles (27 km) long, near the coast of northwest Oregon in the United States. It drains an oceanside valley in the foothills of the Northern Oregon Coast Range west of Portland and empties into the Pacific Ocean via Tillamook Bay. It is one of five rivers—the Tillamook, the Trask, the Wilson, the Kilchis, and the Miami—that flow into the bay.

Rising in southern Tillamook County about 4 miles (6.4 km) east of Cape Lookout, it flows initially east, then generally north, through a long broadening farming valley, passing west of Tillamook and entering the south end of Tillamook Bay. For its lower 1 mile (1.6 km), it shares a channel with the Trask River.

Although much of the upper watershed of about 61 square miles (160 km²) is forested, much of the lower valley consists of drained pasture land. Home of the Tillamook County Creamery Association, the county has been called "a natural cow pasture" by Sunset Magazine".

Named tributaries from source to mouth are Mills, Munson, Joe, Simmons, Fawcett, Killam, and Bewley creeks. Then come Sutton, Beaver, Anderson, Fagan, Esther, Tomlinson, Memaloose, and Dick creeks.