The static sorption of golda(III), palladium (II), and platinum (IV) from hydrochloric acid solutions on polysilsesqmuioxanes modified with 3-aminopropyl, 2- aminoethyl-3-aminopropyl, and dithiooxamaide functional groups has been studied. All three sorbents selectively extract noble metail ions compared to the accompanying s- and d-element ions. The conditions for the quanl titative sorption of noble metal ions in the dynamic mode on dithiooxamidated polysilrsuesquioxane, as well as the conditions for the partial separation of gold (III), palladium (II), and platinum (IV), are determined. The compositions of eluents for separating gold (III) from platinoid ions at the desorption stage have been selected.