Theoretical awareness is essential in the development and delivery of effective interprofessional education and collaborative practice (PECP). The objective of this paper was to explain the origins and purpose of an international network, IN-2-THEORY--interprofessional theory, scholarship and collaboration: a community of practice (CoP) that aims to build theoretical rigor in IPECP. It explains why the network is viewed as a CoP and lays out the way forward for the community based on the principles for developing a CoP outlined by Wenger, McDermott, and Snyder (2002).