The nature of professionalism teaching is a current issue in veterinary education, with an individual's identity as a professional having implications for their values and behaviours, and for their career satisfaction and psychological wellbeing. An appropriately formed professional identity imparts competence in making complex decisions: those that involve multiple perspectives and are complicated by contextual challenges. It enables an individual to act in a way that aligns with their professional values and priorities, and imparts resilience to situations in which their actions are dissonant to these personal beliefs. There are challenges in professionalism teaching that relate to student engagement and faculty confidence in this area. However, these cannot be addressed without first defining the veterinary professional identity, in effect, the aim of professionalism teaching. In this paper, existing identity models from the wider literature have been analysed through a veterinary lens. This analysis has then been used to construct a model of veterinary professional identity which incorporates the self (personal morals and values), social development (learning from the workplace environment), and professional behaviours. Individuals that form what we have termed "self-environment-behaviour connections" are proposed to be able to use workplace learning opportunities to inform their identity development, such that environmental complexity does not obstruct the link between values and behaviours. Those who fail to connect with the environment in this way may perceive that environmental influences (the client, financial limitations) are obstructive to enacting their desired identity, and they may struggle with decisionmaking in complex scenarios.