In cellulosic ethanol production, pretreatment of biomass to facilitate enzymatic hydrolysis inevitably yields fermentation inhibitors such as organic acids, furans, and phenols. With representative inhibitors included in the medium at various concentrations, individually or in various combinations, ethanol production by Corynebacterium glutamicum R under growth-arrested conditions was investigated. In the presence of various inhibitors, the 62--100% ethanol productivity retained by the C. glutamicum R-dependent method far exceeded that retained by previously reported methods.