Introduction: Renal transplantation are admitted to emergency department (ED) more than normal population. The present brief report aimed to determine the reasons of renal transplant patient's ED visits. Methods: This retrospective case series study analyzed the reasons of renal transplant recipients admission to one ED between 2011 and 2014. The patient data were collected via a checklist and presented using descriptive statistics tools. Results: 41 patients with the mean age of 40.63 +/- 10.95 years were studied (60.9% male). The most common ED presenting complaints were fever (36.6%) and abdominal pain (26.8%). Infections were the most common final diagnosis (68.3%). Among non-infectious causes, the most common was acute renal failure (9.7%). 73.2% of the patients were hospitalized and no cases of graft loss and mortality were seen. Conclusion: The most common reason for ED admission was fever, and infections were the most common diagnosis. Acute gastroenteritis being the most frequent infection and among non-infectious problems, acute renal failure was the most frequent one.