Purpose: The purpose of this paper is to discuss the need for integrating a focus on digital literacies and digital ethics into sustainability education, proposing a conceptualization of these for sustainability education. Design/methodology/approach: The paper draws on relevant literature in the field of sustainability education and in the field of digital literacies and digital ethics. It synthesizes perspectives in both fields to form a conceptualization of digital literacies and digital ethics for sustainability education. Findings: The paper conceptualizes "digital literacies" as a capacity to reflect on the nature of digital space in relation to sustainability challenges and "digital ethics" as a capacity to reflexively engage with digital space in ways which build rich discourses around sustainability. Critically reflective and exploratory activities in digital space are a means of developing these capacities. Originality/value: The conceptualization allows sustainability education to account for the increased role digital space plays in shaping views of sustainability challenges. It proposes a pedagogical approach to doing this.