Introduction. Sex reassignment surgery is an important step for transsexuals, since it is known to help the patients to live more easily in their gender role and to significantly increase quality of life. Aims. To critically evaluate our experience with the combined procedure of hysterectomy, bilateral salpingo-oophorectomy, and bilateral mastectomy for female-to-male (FtM) transsexual patients. Methods. Thirty-two FtM transsexuals who underwent hysterectomy, bilateral salpingo-oophorectomy, and bilateral mastectomy in one single operative setting. Main Outcome Measures. Operating time and complications, both intra-and postoperatively. Results. Patients were 30.0 +/- 5.8 years of age, with a body mass index of 24.8 +/- 3.5 kg/m2. The majority of patients underwent hysterectomy and bilateral salpingo-oophorectomy by laparoscopy (31/32, 96.9%). The median operating time was 222.5 minutes (inter-quartile range [IQR] 190-270 minutes). The median postoperative stay was eight days (IQR, 7-9 days). Postoperative adverse events were found in five patients (15.6%), including breast hematomas as the most frequent complication (4/32, 12.5%). In one patient (1/32; 3.1%), conversion from laparoscopy to laparotomy was necessary, which was considered an adverse event. None of our patients required reoperation or readmission to the hospital. Conclusion. Combined hysterectomy/salpingo-oophorectomy, and bilateral mastectomy in a single operating session seems a safe, feasible, and valuable procedure for FtM transsexuals. Ott J, van Trotsenburg M, Kaufmann U, Schrogendorfer K, Haslik W, Huber JC, and Wenzl R. Combined hysterectomy/salpingo-oophorectomy and mastectomy is a safe and valuable procedure for female-to-male transsexuals. J Sex Med 2010;7:2130-2138.