This thesis provides a systematic literature review of a selection among current papers and articles on Green Information Systems (IS). The main focus is on the current state of Green IS in academic research. This study aims at gaining a deeper understanding and a clearer view of the state-of-the-art of IS for environmental sustainability research, with the goal of clarifying the diffuse idea of what Green IT/IS is, and what differentiates Green IS from Green IT. To support the objective of this study, the articles selected for data analysis were collected by using a systematic literature review as research and analytical method. Within the thesis, a descriptive angle with an interpretative character is used to analyse the data extracted. A theoretical framework based on concepts from sustainability, Green IS and Green IT is employed in order to analyse and compare terminologies and frameworks used in the studied articles. Furthermore, the different dimensions of sustainability and the various terms used to describe Green IS are analysed comparatively. The result and analysis are discussed in a conclusion confirming the on-going ambiguity of the terms Green IT and Green IS and the transformative power of IS. This study aims to contribute to our understanding of some of the existing problems that hinder further research in the context of Green IS. Finally, we emphasise the importance of clear definitions in order to advance the IS position for transforming society in a sustainable direction.