The present invention provides an optical glass including, by mass %: 46 to 70 of B.sub.2O.sub.3; 3 to 10 of Li.sub.2O; 5 to 15 of Y.sub.2O.sub.3; 0 to 46 of SiO.sub.2: 0 to 20 of Al.sub.2O.sub.3: 0 to 40 of MgO+CaO+SrO+BaO; 0 to 30 of La.sub.2O.sub.3; and 0 to 10 of ZrO.sub.2+TiO.sub.2+Gd.sub.2O.sub.3.