The establishment of a strong professional identity (PI) among sport psychology practitioners (SPPs) has the potential to increase the likelihood of individual ethical working, awareness of professional roles, and ultimately, support of a more effective and lasting career. Nevertheless, there is currently no global consensus regarding a definition of sport psychology professional identity, which is imperative for ongoing advances in professional formation, training and practice. In this study, we conducted a systematic review of literature with the aim of developing an understanding of existing sport psychology professional identity knowledge. Following the PRISMA guidelines, we initially identified 4,393 research records, which we screened and assessed for eligibility reducing the sample of articles fitting our inclusion criteria to 25 manuscripts. We analyzed these articles by engaging in an inductive thematic analysis aimed at identifying patterns within the data and forming an organized, rich, and detailed description of the data.