Hexahydroxybenzene triscarbonate is a chemical compound, an oxide of carbon with formula . Its molecular structure consists of a benzene core with the six hydrogen atoms replaced by three carbonate groups. It can be seen as a sixfold ester of hexahydroxybenzene (benzenehexol) and carbonic acid.
The compound was obtained by C. Nallaiah in 1984, as a tetrahydrofuran solvate.