Mariette may signify:
;Family name:
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Auguste Mariette
François Auguste Ferdinand Mariette (11 February 182118 January 1881) was a French scholar, archaeologist and Egyptologist, and the founder of the Egyptian Department of Antiquities, the forerunner of the Supreme Council of Antiquities.
Early ...
(1821–1881), pioneering Egyptologist.
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Pierre-Jean Mariette (1694–1774), connoisseur and chronicler of artistic life in Paris
;Given name:
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Mariette Bosch (died 2001), South African murderer executed by Botswana
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Mariette Hansson (born 1983), sometimes MaryJet or simply mononym Mariette, Swedish singer and songwriter
;Others
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''Mariette'', a yacht built by
Nathanael Greene Herreshoff in 1915
{{given name, type=both