''Cyrtosia'' is the scientific name of two genera of organisms and may refer to:
*
''Cyrtosia'' (fly), a genus of insects in the family Mythicomyiidae
*
''Cyrtosia'' (plant), a genus of plants in the family Orchidaceae
* ''Cyrtosia'' (Packard, 1864), a synonym for ''
Packardia'', a genus of moths in the family Limacodidae
{{Genus disambiguation