Noctua may refer to:
*
Noctua (company), a computer hardware company
*
Noctua (constellation)
Noctua (Latin: ''owl'') was a constellation near the tail of Hydra in the southern celestial hemisphere, but is no longer recognized. It was introduced by Alexander Jamieson in his 1822 work, ''A Celestial Atlas'', and appeared in a derived col ...
, an archaic constellation
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''Noctua'' (moth), a genus of moths
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