''Graellsia'' may refer to:
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Graellsia isabellae
''Graellsia isabellae'', the Spanish moon moth, is in the silkmoth family Saturniidae. It is the only species in the monotypic genus ''Graellsia''. The species was first described by Mariano de la Paz Graells y de la Agüera in 1849 and the genu ...
'', a species of European moth belonging to the monotypic genus ''Graellsia''
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''Graellsia'' (plant), a genus of cruciferous plant
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''Graellsia'' (journal), a Spanish zoological journal
{{Disambiguation, genus