C. dubia
# C. dubia

C. dubia may refer to:

* Calochlaena dubia. a fern species
* Centaurea dubia, the Tyrol knapweed, a perennial plant species
* Cercomela dubia, the sombre chat, a bird species found in Ethiopia and Somalia
* Ceriodaphnia dubia, a species of water flea in the class Branchiopoda
* Clathrina dubia, a sponge species
* Clausilia dubia, a species of small, very elongate, left-handed air-breathing land snail species
* Colias dubia, the dwarf clouded yellow, a small butterfly species found in India
* Coursetia dubia, a legume species found only in Ecuador
