- Kootenays , a region of southern British Columbia, Canada
- Kootenay River (or in the United States) of southeastern British Columbia in Canada and northern Idaho and western Montana in the United States
- Kootenay Lake , on the Kootenay River in British Columbia
- Lake Koocanusa (a portmanteau of Kootenay-Canada-USA), a reservoir on the Kootena(y/i) River that crosses the Canada-US border
- Kootenay National Park , British Columbia national park, source of the Kootenay River
- Kootenai (tribe) , a Native American/First Nations people in British Columbia, Idaho and Montana, also known as the ''Kutenai'' or '' Ktunaxa Nation ''
- Kutenai Language of the Kootenai tribe, also ''Kootenai'' or ''Ktunaxa language''
- Kootenai, Idaho , a city
- Kootenai County, Idaho
- Kootenai National Forest in western Montana and northern Idaho
- Regional District Of East Kootenay, British Columbia
- Regional District Of Central Kootenay, British Columbia
- Regional District Of Kootenay Boundary, British Columbia
- Numerous electoral districts in British Columbia:
- --- Kootenay (electoral District) , a federal district in use from 1903 to 1914
- --- Kootenay East , a federal district from 1914 to 1966 and 1987 to 1996
- --- Okanagan—Kootenay , a federal district from 1966 to 1977
- --- Kootenay East—Revelstoke , a federal district from 1977 to 1987
- --- Kootenay—Columbia , a federal district from 1996 to date
- --- Kootenay West , a federal district from 1914 to 1987
- --- Kootenay West—Revelstoke , a federal district from 1987 to 1996
- --- Kootenay—Boundary—Okanagan , also known as West Kootenay—Okanagan , a federal electoral district in use from 1996 to 2003
- --- Kootenay (provincial Electoral District) , a provincial district from 1871 to 1878 and 1966 to 1999
- --- Kootenay East (provincial Electoral District) from 1890 to 1894
- --- East Kootenay North , a provincial district from 1898 to 1903
- --- East Kootenay South , a provincial district from 1898 to 1903
- --- West Kootenay (provincial Electoral District) , from 1890 to 1894
- --- West Kootenay North , a provincial district from 1894 to 1898
- --- West Kootenay South , a provincial district from 1894 to 1898
- --- West Kootenay-Nelson , a provincial district from 1898 to 1903
- --- West Kootenay-Revelstoke , a provincial district from 1898 to 1903
- --- West Kootenay-Rossland , a provincial district from 1898 to 1903
- --- West Kootenay-Slocan , a provincial district from 1898 to 1903
- Salish-Kootenai College in Pablo, Montana
- '' Kootenai Valley Press '' (also ''Kootenai Valley Times'') a newspaper in Bonners Ferry, Idaho
- Kootanae House was a fur trading post near present-day Invermere, British Columbia
- The Kootenay Ice , a junior ice hockey team based in Cranbrook, British Columbia
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