INTRODUCTION: Peritoneovaginal fistula is an extremely rare cause of persistent vaginal leakage following a hysterectomy. Likewise, fallopian tube prolapse is an uncommon but known complication of hysterectomy. Fallopian tube prolapse resulting in peritoneal leakage has yet to be reported in the literature. CLINICAL CASE: A 27-year-old female presented with a two year history of continuous leakage per vagina. The leakage started shortly after an abdominal hysterectomy. Examination noted clear fluid emanating from a vaginal lesion located at the level of the vaginal cuff. An extensive workup ruled out vesicovaginal and ureterovaginal fistula. Surgical exploration noted that the lesion was a prolapsed fallopian tube, which was resected vaginally. DISCUSSION: This is the first reported case of peritoneovaginal fistula associated with a prolapsed fallopian tube. CONCLUSION: Vaginal resection of the fallopian tube remnant and reclosure of the vaginal cuff results in cure of the leakage.