Purpose <p>To examine the impact of the Gans repositioning maneuver (GRM) on patients with posterior canal BPPV (PC-BPPV) and to determine the quality of the studies.</p> Methods <p>“PubMed, CINAHL, Scopus, PEDro, REHABDATA, Web of Science, and EMBASE” were systematically searched from inception to November 2025. Experimental studies involving patients with PC-BPPV who were administered the GRM, compared with active, passive, or no treatment, and examined PC-BPPV symptoms, were included in this review. The quality of the included studies was assessed using the “Physiotherapy Evidence Database (PEDro).”</p> Results <p>A total of eleven studies met the inclusion criteria. A total of 1183 patients with PC-BPPV (mean age: 54.9 years; females: 59%) were included in this review. The results showed that GRM is effective for patients with PC-BPPV. The quality of the included studies ranged from 3 to 8, with a median score of 6.</p> Conclusions <p>The initial findings suggest that GRM appears effective and comparable to the Epley Repositioning Maneuver (ERM) and Semont Repositioning Maneuver (SRM) in patients with PC-BPPV. However, it was not superior to either maneuver. The overall certainty of evidence is moderate due to methodological limitations and heterogeneity among the included studies. Thus, additional high-quality randomized controlled trials with standardized treatment protocols and long-term follow-ups are warranted to confirm the clinical effects of the maneuver.</p>