Dichloro(1,5-cyclooctadiene)palladium is the organopalladium compound with the formula PdCl<sub>2</sub>(C<sub>8</sub>H<sub>12</sub>) where C<sub>8</sub>H<sub>12</sub> is cycloocta-1,5-diene (cod) or abbreviated PdCl<sub>2</sub>(cod). It is a yellow solid that is soluble in chloroform. According to X-ray crystallography, the Pd center is square planar. This complex can be synthesized by reaction of tetrachloropalladate in hydrochloric acid with cycloocta-1,5-diene. A mechanochemical synthesis combines PdCl<sub>2</sub> and cod.