Koos may refer to:
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Koos (name), a masculine given name and a surname
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Koos (fashion label)
Koos Van Den Akker (March 16, 1939 – February 3, 2015) was a Dutch-born fashion designer who lived and worked in New York City. During his 50+ year long career, Van Den Akker was recognized for his ''Koos'' fashion label (1969-2015) which featu ...
, a former haute couture fashion label
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Koos (island), in the Bay of Greifswald, Mecklenburg-Vorpommern, Germany
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Koos Group, a Taiwan-based pan-Asian business group
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KOOS, a radio station in North Bend, Oregon, United States
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KTEE, originally KOOS, a radio station in North Bend, Oregon
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