HAA

HAA may refer to:

Haa as a word Haa Municipality, an old spelling of Hå Municipality in Norway Haa District, Bhutan Haa, Bhutan, the seat of the district Hāʼ, Arabic letter ه Hän language

HAA as a code or acronym Haloacetic acid Hasvik Airport in Finnmark, Norway Healthy Americans Act, a United States Senate bill Heavy anti-aircraft High Achievement Academy, in Beachwood, Ohio, United States High-altitude airship Honolulu Academy of Arts Hopper wagons of the British Rail Merry-go-round train NRC Herzberg Astronomy and Astrophysics Research Centre

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