In classical antiquity, the muscle cuirass (Latin: lorica musculata), anatomical cuirass, or heroic cuirass is a type of cuirass made to fit the wearer's torso and designed to mimic an idealized male human physique. It is commonly depicted in Greek and Roman art, where it is worn by generals, emperors, and deities during periods when soldiers used other types.

In Roman sculpture, the muscle cuirass is often highly ornamented with mythological scenes. Archaeological finds of relatively unadorned cuirasses, as well as their depiction by artists in military scenes, indicate that simpler versions were worn in combat situations. The anatomy of muscle cuirasses intended for use might be either realistic or reduced to an abstract design; the fantastically illustrated cuirasses worn by gods and emperors in Roman statues usually incorporate realistic nipples and the navel within the scene depicted.
muscle cuirass