Washoe or washo could refer to:
- Washoe (chimpanzee) -- a chimpanzee that was taught by humans to speak in American Sign Language
- Before it was made a Territory, Nevada was popularly known as Washoe
- Washoe County, Nevada
- Washoe Lake - lake in Nevada
- Washoe Creek, Sonoma County, California
- Washoe people, a Native American people
- Washo language