'''Waa''' or '''WAA''' may refer to: * Crow (Australian Aboriginal mythology) * Namatahi Waa (born 1990), New Zealand rugby union player * Wa (unit), a Thai unit of length * Waffenamt, a research and development agency of Nazi Germany * Wales Airport (Alaska) * Walla Walla language * War Assets Administration * Wealth attained advantage, an econophysics model of ''the rich get richer and the poor get poorer'' * West African Airlines, a Beninese airline * Westair Aviation, a Namibian airline * Western Association of Architects, a defunct professional body * Wiltshire Air Ambulance, serving Wiltshire, England * Women's Action Alliance, an American feminist organization * Workers Alliance of America, an American political organization * World Archery Asia * Woolclassers' Association of Australia * Wreaths Across America, American nonprofit organization
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