Charniodiscus is an Ediacaran fossil that in life was probably a stationary filter feeder that lived anchored to a sandy sea bed.

While the organism superficially resembles the sea pens (cnidaria), it is probably not a crown-group animal.

Charniodiscus was first found in Charnwood Forest in England, and named by Trevor D. Ford in 1958.

Later it was discovered that a frond (Charnia masoni) was part of a closely related organism.

Species are distinguished by the number of segments, the presence or absence of distal spines, and by shape ratios.