The energy dependence of the cross-sections of 3He-particle induced reactions on natPt targets was studied in the energy range from threshold up to 26MeV, using a stacked-foil irradiation technique and classical gamma-spectroscopy. The formation of the radioisotopes via natPt(3He,xn)192Hg, natPt(3He,xn)193m,gHg, natPt(3He,xn)195m,gHg, natPt(3He,xn)197m,gHg, natPt(3He,xn)199mHg, natPt(3He,pxn)192,193,194,195,199,200mAu, natPt(3He,pxn)196m,gAu, natPt(3He,pxn)198m,gAu and natPt(3He,2pxn)197m,199Pt reactions were assessed. The obtained excitation functions were compared with the earlier published data and the theoretical model calculations by the codes ALICE-IPPE, EMPIRE-03, TALYS-1.4 and TENDL-2011 activation data library.