Tritellurium dichloride is the inorganic compound with the formula Te<sub>3</sub>Cl<sub>2</sub>. It is one of the more stable lower chlorides of tellurium.
Te<sub>3</sub>Cl<sub>2</sub> is a gray solid. Its structure consists of a long chain of tellurium (Te) atoms, with every third Te center carrying two chloride ligands for the repeat unit -Te-Te-TeCl<sub>2</sub>-. It is a semiconductor with a band gap of 1.52 eV, which is larger than that for elemental Te (0.34 eV). It is prepared by heating tellurium with the appropriate stoichiometry of chlorine.