The soft-plumaged petrel (Pterodroma mollis) is a species of seabird in the family Procellariidae.
The soft-plumaged petrel is a medium-sized petrel. Its plumage is dark grey and white, and its wings are narrow and with a pointed tail distinct in flight. It has a dark grey head with prominent white feathers on the cheeks and throat. There is a white speckling on forehead along with a prominent dark eye patch. Its underside is mostly white, which turned dark grey at underwings. The bill is black and about 25–32 mm long and has a sharp hook. Its legs are pink with black on the outer webs and toes.
Both sexes are noisy, making medium-pitched moans and shrill squeaks.