This paper presents, as a 'sustainable world typology', the findings of a current research project that is concerned with what it means for there to be a sustainable world and how humanity might go about achieving this. The typology is framed around key sustainable world dimensions and displays, for each of these dimensions, how Reformist and Transformational approaches are conceived in terms of giving meaning to the concept of a sustainable world. Key themes evident in the typology are discussed namely: (a) the primary sustainable world goal of flourishing life, (b) the anthropocentrism-ecocentrism divide, (c) approaches to human interests satisfaction, and (d) optimisation vs resilience living. The paper notes the mere descriptive nature of the typology and concludes with some thoughts on ways in which the typology might be critiqued to identify which approach, Reformist or Transformational, is more likely to see the primary sustainable world goal achieved. Keywords: Sustainability, Sustainable world, Reformist, Transformational, Typology 1. Introduction 1.1 Purpose of this paper This paper reports on a component of a current research project that is concerned with what it means for humans to live sustainably on the Earth, that is, for there to be a sustainable world, and how humanity might go about achieving this. The full project considers three key questions namely: (a) what does it mean for there to be a sustainable world?, (b) what approach to a sustainable world is being pursued by a specific Australian state government?, and (c) what are the implications of this government's sustainable world approach in respect of its contribution to, or detraction from, a global sustainable world goal? This paper presents the findings from research undertaken to answer the first of these three questions. Dobson (1996), in considering ways in which the meaning of complex pluralistic concepts such as that of a sustainable world can be presented, proposes a typology approach as preferable to alternates such as definitional or discursive methods. The approach taken in this paper follows Dobson's advice and presents a summation of different perspectives of what it means for there to be a sustainable world in the form of a 'sustainable world typology' (SWT), shown as Figure 1. A number of existing typologies that are oriented towards sustainable world issues are evident in the literature and these can be categorised into three main forms. First, sustainable world dimension (SW Dimension) typologies are those that focus on what are seen as key dimensions (or principles) that collectively present a picture of what is means for there to be a sustainable world and how this might be achieved. These SW Dimensions typically include items such as how natural resources are to be used, how human interests are to be satisfied, intergenerational equity obligations, and so on. Typologies of this form display different approaches to these dimensions, with these approaches often collapsed into 2, or at the most 4, representative c...