For more than 25 years, universities have been acknowledged as having the potential to make crucial contributions to addressing the challenges of environmental sustainability. During this time, many universities have undertaken activities in support of sustainability, although few have succeeded in realizing their potential to make significant contributions in research and education or as adopters of sustainable practices within their institutions. This paper aims to assist universities to improve their contributions to the challenges of environmental sustainability by: reviewing current literature guiding universities to support sustainability; identifying gaps in the literature; and, proposing a composite framework to facilitate contributions by IS-enabled innovations that significantly improve the level of sustainability behaviours and practices in universities. An IS research agenda integrated with the Composite Framework is proposed.