Lioconcha hieroglyphica is a species of saltwater clam, a marine bivalve mollusc in the family Veneridae, the venus clams.
The shell of Lioconcha hieroglyphica reaches a maximum length of about 42 mm. The shape of the shell is trigonal with a truncated posterior. The anterodorsal margin is acutely rounded. The linule is elongated and heart-shaped. It has tan to dark brown rod-like and angular markings, often with the appearance of cuneiform or hieroglyphs. The markings may be the result of a diffusion-mediated chemical cellular automaton, like Conus textile's
