Chilliwack can refer to:
- Chilliwack, British Columbia, a city in Canada
- Chilliwack Chiefs (2011–), a junior ice hockey team
- Chilliwack Bruins, a former junior ice hockey team
- CFB Chilliwack, a former Canadian Forces Base in Chilliwack
- Chilliwack River, a river in British Columbia, Canada and Washington, United States
- Chilliwack Lake, a lake in British Columbia, Canada and Washington, United States
- Chilliwack Lake Provincial Park, a provincial park located around the lake
- Chilliwack Mountain, a mountain in the city of Chilliwack
- Chilliwack (band), a Canadian rock band
- Chilliwack (1970 album)
- Chilliwack (1971 album)
- Chilliwhack (electoral district), a provincial electoral district from 1903 to 1912
- the former District Municipality of Chilliwhack is now part of the City of Chilliwack, British Columbia
- for the First Nations peoples formerly known as the Chilliwack Indians and Chilliwack Indian Band, see Stó:lō