Zirconyl chloride is the inorganic compound with the formula of [Zr4(OH)8(H2O)16]Cl8(H2O)12, more commonly written ZrOCl2·8H2O, and referred to as zirconyl chloride octahydrate.

It is a white solid and is the most common water-soluble derivative of zirconium.

[2] It adopts a tetrameric structure, consisting of the cation [Zr4(OH)8]8+.

features four pairs of hydroxide bridging ligands linking four Zr4+ centers.

The chloride anions are not ligands, consistent with the high oxophilicity of Zr(IV).