Modiolus auriculatus, the eared horse mussel, is a bivalve mollusc of the family, Mytilidae, which has a natural range in the Indian and Pacific Oceans.

Modiolus auriculatus has an equivalve shell with each valve being inequilateral with their beaks being very close to the anterior end.

The shell has a smooth with growth lines and the covering periostracum is pubescent.

Its Mediterranean distribution is still largely restricted to the coast off Israel where it is not uncommon.

It is often associated with small holes in rocky shores, especially on the seaward edge of sea grass beds and at the landward margin of ridges vegetated with algae.