A sieving step was developed to recover corn fiber from whole stillage of a dry grind process as a cellulosic ethanol feedstock, and to reduce fiber contents in distillers dried grains with solubles (DDGS). Several processes have been developed to recover fiber in the dry grind process, such as wet fractionation, dry fractionation and elusieve process. Wet fractionation and dry fractionation recover fiber before liquefaction, but addition of these steps to existing plants requires considerable modifications with high capitalcosts. The elusieve process recovers fiber from DDGS, but it requires drying of DDGS. To simply integratefiber recovery to current dry grind plants with less operating and capital costs, sieving was applied towhole stillage. Commercial whole stillage samples were ground, incubated with protease or with a surfactant, and sieved.