Innovation is known to be an important and influential factor in fostering sustainable development. Yet, there is a paucity of literature on the extent to which universities are successfully implementing innovation in this field. This paper addresses this gap, by examining the role of innovation in the field of environmental sustainability in universities, and by reporting on the results of an international study, in which examples of successful experiences and good practice were identified. The paper outlines the lessons learned from such examples, with the aim of motivating other universities to engage in this rapidly growing field