There has been growing interest among practitioners and academics in the emergence of intergovernmental relations between local and Aboriginal governments in Canada. Initial research has focused on describing the nature of these relations but has yet to develop any theoretical expectations regarding why some communities are more likely to cooperate than others. We addresses this lacuna by developing a theoretical framework for explaining the emergence of cooperation between Aboriginal and local governments. After identifying a set of variables and specifying how they are likely to affect the propensity of communities to cooperate, we conclude with a discussion of how future researchers might use this framework to investigate cooperation and noncooperation between Aboriginal and local governments in Canada and in other settler societies.