Echinus

Echinus may refer to:

Echinus (Acarnania), a town in ancient Acarnania, Greece
Echinus (Thessaly), a town in ancient Thessaly, Greece; also a Roman Catholic titular bishopric
Echinus (molding), a molding similar to the ovolo
Echinus (sea urchin), a genus of animals
Echinus (plant), a synonym for the plant genus Mallotus