This is a list of fauna observed in the U.S. state of Washington.
Animals
Birds
Main article: List of birds of Washington (state) See also: List of birds of Olympic National Park and List of birds of Mount Rainier National Park- American robin (Turdus migratorius)
- Chestnut-backed chickadee (Poecile rufescens)
- Spotted towhee (Pipilo maculatus)
- Steller's jay (Cyanocitta stelleri)
- Dark-eyed junco (Junco hyemalis)
- Bald eagle (Haliaeetus leucocephalus)
Fish
See also: List of freshwater fishes of Washington- Crescent trout (Oncorhynchus clarki crescenti)
- Beardslee trout (Oncorhynchus mykiss irideus var. beardsleei)
- Pink (Humpback) salmon (Oncorhynchus gorbuscha)
- Coho (Silver) salmon (Oncorhynchus kisutch)
- Chinook (King) salmon (Oncorhynchus tshawytscha)
- Sockeye salmon (Oncorhynchus nerka)
- Coastal cutthroat trout (Oncorhynchus clarki clarki)
- Westslope cutthroat trout (Oncorhynchus clarki lewisi)
- Rainbow trout (Oncorhynchus mykiss)
- Dolly Varden trout (Salvelinus malma)
- Bull trout (Salvelinus confluentus)
Mammals
Main article: List of mammals of Washington See also: Mammals of Olympic National Park- Roosevelt elk (Cervus canadensis roosevelti)
- Shrew-mole (Neurotrichus gibbsii)
- American pika (Ochotona princeps)
- Snowshoe hare (Lepus americanus)
- Mountain beaver (Aplodontia rufa)
- Olympic marmot (Marmota olympus)
- Grizzly bear (Ursus arctos horribilis)
- Pygmy rabbit (Brachylagus idahoensis) reintroduced
- Black bear (Ursus americanus)