In the present paper, I aim to both contribute to a culture-based theory of self-regulation and clarify some mutually constitutive functions of psychological and sociocultural phenomena. I examine the relations between self and culture and the role of these relations in the development of self-regulation. Self-regulation is based on the intention to modify internal processes and behavior to reach one’s goals. Because the development of self-regulation is embedded in a cultural context that gives priority to a specific model of agency, processes of self-regulation are assumed to differ cross-culturally. First, I give a brief overview on self-regulation research. Further, I discuss the contribution of a culture-informed perspective to the study of self-regulation and its development, taking into account interpersonal self-regulation. Finally, I present a ‘Cultural Model of Agency and Self-Regulation,’ which suggests how to link culture and individual agency.