In the title compound, [PdCl2(C20H17P)2], the PdII atom lies on a center of symmetry, resulting in a distorted trans-square-planar geometry. The Pd—P and Pd—Cl bond lengths are 2.3366 (7) and 2.2966 (7) Å, respectively. The vinyl group is disordered over two sets of sites in a 0.696 (15):0.304 (15) ratio.