In the title compound, [Pt(C(37)H(55)P(2)Si)Cl], prepared from MeSiH[(cy)(2)PC(6)H(4)](2) and [Pt(cod)Cl(2)] (cy = cyclo-hexyl; cod = cyclo-octa-1,5-diene), the Pt(II) atom is coordinated by two P atoms, one Si atom and one Cl atom in a distorted square-planar geometry. The two P atoms are in a trans arrangement and the four cyclo-hexane rings adopt a chair conformation.