The influence of the kind of support (Al2O3, SiO2, and TiO2) on the catalytic activity and selectivity Of Ru-Sn-B catalysts for the hydrogenation of Methyl oleate to oleyl alcohol was studied. The results show that the most active and selective catalyst for producing oleyl alcohol is Ru(1%)-Sn(2%)-B/Al2O3. This was attributed to the catalyst having a favorable surface Sn/Ru ratio (similar to 2). The SiO2-supported Ru-Sn-B catalyst had a good activity and hydrogenated both C=C double bonds and the C=O group, thus producing stearyl alcohol with a high yield. It however deactivatect, to a great extent, its final conversion being lower than that of the bimetallic catalysts supported on Al2O3 and TiO2. The TiO2-supported catalyst had a high selectivity to saturated methyl esters because it hydrogenated C=C double bonds but had little activity for hydrogenation of the C=O group.