In this paper I discuss how participation in IT design depends on howactors and IT design is defined. The argument is that participation isintertwined with gender, power and knowledge. The empirical basis for thepaper is an ethnographic study of a business process analysis in an ITdesign project in a Swedish government agency. The frame of reference isconstituted by ideas from PD and theories from feminist technoscience,and a central concept is sociomaterial practices. The empirical material isanalysed with the help of agential realism. Based on the analysis I discusshow participation in IT design in various ways is intertwined with gender,power and knowledge. One major conclusion is that the women who werethe central knowers in the business process analysis became visible asparticipants. This is related to the debate about women‟s participation in ITdesign.