In this paper, we discuss the topic of governmental transparency, and more specifically in relation to Open Data. We look at governmental transparency in terms of channels, benefits, context, directions, etc., and we argue that there is an emergence of new intermediaries in the domain of governmental transparency, made possible mainly through information and communication technology. We then use the concept of public utility to integrate transparency and open data in a larger governmental perspective and we give a few examples of the use of open data to that effect. We propose an approach to support proactive transparency based on Open Data, based on a “lens” to be used to analyse transparency and open data in given contexts.