Adsorption of sulfuric acid species on various metal(111) electrodes in a 0.5 M H2SO4 solution was investigated by infrared reflection absorption spectroscopy (IRAS). Pt, Au, Ag, Cu and Rh(111) were used as electrodes. HSO4- is adsorbed on all of the surfaces including Pt, Rh, Au, Ag and Cu in a 0.5 M H2SO4 solution. Considerable amounts of sulfate in addition to bisulfate coexist on Ag(111) in a 0.5 M H2SO4 solution. Also, both DSO4- and SO42- are coadsorbed on Au(111) in 0.5 M D2SO4 + D2O solution. The interconversion of HSO4- /H3O+ and H2SO4 that was seen on Pt(111) was not observed on the other electrodes. The frequencies of the SO3 symmetric and S-OH stretching bands of a bisulfate adsorbed on the electrode surfaces are related to the electronic state of each M(111) surface.