We review and synthesize previous team research and suggest that individuals’ previous experiences and orientations combine to yield predispositions to occupy six different team roles, which we refer to as Team Role Experience and Orientation (TREO) dimensions. We report the development of a survey measure of TREO dimensions and establish its content validity using a sample of subject matter experts’ item classifications. Furthermore, we provide evidence that TREO dimensions are distinguishable from, but related to, measures of the “Big 5” personality constructs. We also illustrate the temporal stability of the measures. Moreover, we test the predictive validity of TREO scores as related to peer ratings of members’ behaviors during team activities. We discuss future theoretical and research implications of TREO dimensions, and potential future applications of the measure.