We argue that since agency and structure are indivisible parts of a single process through which society is continuously created over time, everything that persists or changes in archaeological sites is evidence of agency. The challenge is to adopt appropriate descriptive levels and language to avoid falsely dividing agency and structure. Successful archaeological studies use networks and chains as models or metaphors for connections in sequences of action over time. We argue that models must also link micro-scale actions to outcomes on the macroscale. Because theories of agency differ in the degree of freedom of action they assume, archaeologists must also clearly identify their own position with respect to constraints on action.We suggest that whenever archaeologists manage to do analyses of agency right, we are simultaneously talking about agency and structure, since these are not alternatives, but inseparable parts of a single process (Giddens, 1979, pp. 53, 69-70). Moore (2000) suggested that archaeologists think about structure and agency dialectically. While forcing us to keep agency and structure linked, in practice this still risks allowing us artificially to separate structure (interpreted as institutions) from agency (interpreted as action). It risks our envisioning the past as an alternation of moments of the exercise of agency in an otherwise continuous flow of structure.Our position is that structure and agency do not alternate. Structured agency is exercised in sequences of practices that recapitulate and transform prior actions, sequences that we can recognize as structures at scales from the individual technical practice to the collective coordinated experience of long-enduring landscapes. Structuration is simultaneously the exercise of agency and the constitution