Nooksack (Nooksack: Noxwsʼáʔaq) or Nootsack may refer to:
- Nooksack people, an American Indian tribe in Whatcom County, Washington
- Nooksack language, the language of this tribe
Places
- Nooksack River, a river in Whatcom County, Washington
- Nooksack Valley, a valley formed by this river
- Nooksack, Washington, a town in Whatcom County, Washington
Schools
- Nooksack Valley School District (commonly referred to as Nooksack), a school district in Whatcom County, Washington
- Nooksack Valley High School, the high school of this school district