Sustainability in marketing has gained some traction over the years, yet we still remain uncertain about exactly what ‘sustainability marketing’ means. Utilising the Scopus database, a discourse analysis was conducted on nearly 200 published journal articles. The analysis categorises multiple sustainability views and outlines three conceptualisations of sustainability marketing: Auxiliary Sustainability Marketing (which focusses on the production of sustainable products), Reformative Sustainability Marketing (which extends the auxiliary approach through the promotion of sustainable lifestyles and behavioural changes) and Transformative Sustainability Marketing (which further extends the auxiliary and reformative approaches through the need for transformation of current institutions and norms, and critical reflection). This paper then discusses how these three conceptualisations might be used by scholars and practitioners to interpret and implement sustainability marketing going forward.