Catalytic activities of the system Sn-Ce-Rh-O and its oxide components SnO2 and CeO2 have been tested in the water-gas shift reaction (WGSR). The degree of conversion obtained in the presence of the system studied was similar to that obtained in the presence of low-activity iron oxides. The redox properties of the system studied, similarly as the redox properties of iron oxides, have been found responsible for their activity in WGSR.