G. darwinii

G. darwinii may refer to:
 * Gephyroberyx darwinii, the Darwin's slimehead, a slimehead fish species in the genus Gephyroberyx
 * Gossypium darwinii, a cotton plant species found only on the Galapagos Islands
 * Gymnodactylus darwinii, Gray, 1845, a gecko species in the genus Gymnodactylus