The notion of sustainability is of paramount importance for long-term survival; it is also about keeping up, moving on, and not jeopardizing the future of life on earth or the future itself. It is about tangible strategies for the reproduction and long-term existence of our own species that may be supported by the mundane everyday life practices and consumer or citizen choices that are often linked directly or indirectly to gender. Sustainable development relies on innovation and innovative social solutions. Without them, sustainability would not persist. This paper sets its research perspective within a systematic review of the literature and theory to develop a sustainability definition within the context of gender as a seed for sustainable innovation. This paper is divided into sections that cover various issues, such as: sustainability and gender in demographics (social justice, increase in number of pensioners, labor market); environment/ecology (education, ecofeminism); and corporate responsibility (consumer decisions and leadership). In each section, a definition is developed, being supported by evidence from existing studies and a discussion on how sustainability may be defined in the context of gender concludes the paper. The paper suggests that gender has a clear social impact, which constitutes a relevant and important seed for the achievement of sustainable development.