Abstract: There is provided an optical glass that (1) has a high refractive index and high dispersion, (2) does not include any Pb compound that will tend to adversely impact the environment or human bodies, (3) is excellent in terms of economic efficiency, and (4) is suitable for mass production. This optical glass contains SiO2, B2O3, BaO, La2O3, TiO2, and, as necessary, one or more from Nb2O5, Ta2O5, WO3, ZrO2, MgO, CaO, SrO, ZnO, Li2O, Na2O, K2O, Y2O3, Gd2O3, and Al2O3—each in an amount within a predetermined range. This optical glass also has optical constant values such as a refractive index (nd) of 1.70-1.93 and an Abbe number (vd) of 28-45.