The sustainability of intercultural relations recently again has been identified as a central, but still neglected responsibility for intercultural research (e.g. Alexander et al., 2014a; Alexander et al., 2014b). This article identifies three different notions of sustainability related to culture in contemporary intercultural research: Egocentric uses focus on one single culture or organization. Utilitarian understandings argue that a sustainable care for intercultural relations may serve other sustainability goals. Allocentric notions ask for a global and equal dialogue on the concept. Complementing the authors above, this article argues for a stronger reflection and analysis of notions of sustainability in intercultural research.