Community of inquiry (CoI) is the conceptual framework which describes critical prerequisite factors for deep and meaningful learning in online learning environments. Based on the literature concerning the CoI framework, it can be observed that studies in which three factors in the model (cognitive, social and teaching presence) were investigated have been increased as scales to determine perception towardsCoI have been developed, which thus made it possible to work on relatively larger sampling groups effectively and to increase generalizability of findings. In this context, within the scope of the present research, by investigating different data collection tools developed by different researchers, studies aiming to determine CoI perception by means of a scale were investigated in detail. Research results reveals that CoI survey instrument developed by Arbaugh et al. (2008) has been widely accepted in the literature; and that the instrument has been adapted to number of languages such as Turkish, Korean and Arabic; and employed in diverse disciplines such as education, business and health care.