Anarchist ideas have dominated green political thought since the appearance of the environmental movement in the late 1960s and 1970s. It is unsurprising, then, that green theorists have taken a stance towards the state which may be described as ambivalent at best. The last 15 years, however, have witnessed a shift on the part of green political theorists in the direction of a more accommodating stance towards the state. This shift in orientation has led to the question of the state becoming a contested issue within environmental political thought, with greens drawing upon a variety of existing theories of the state. Despite this, certain concepts and theories - in particular ecological modernisation and deliberative democratisation - have come to the fore as focal points, or sites of contestation, in discussions over this question. This thesis, however, takes a step back from the current trend of green thinking towards the state. Rather than narrowing the focus of analysis to a particular strand of state theorising, or promoting a particular blueprint of the green state, its main contribution to green political theory resides in it being the first work to provide a wider-ranging critical analysis of the environmental dimensions of various theories of the state which may be delineated within political theory. This is not to say that the thesis does not connect with, and contribute to, contemporary debates. On the contrary, its more expansive focus enables it to embed its commentaries on contemporary green positions towards the state within broader analyses of the theoretical heritage from which they herald. It is an exercise in normative political theory that contributes novel and critical insights into the environmental aspects of each individual perspective on the state, whilst also providing a fuller picture of the many of ways in which green thought and state theorising intersect.