Chronic renal failure and treatment with hemodialysis may culminate into sexually disability, oligospermia, germinal cells dysphasia, and delayed sexual maturity. After a renal transplant, improvement in these patients’ libido, potency, and orgasm are observed. This article attemps to evaluate libido, potency, and fertility in these patients. 100 male patients at Imam Reza Hospital in the renal transplant unit, who had or were going to undergo kidney transplant, were selected, The minimum age was 18 and the maximum was 61 with the mean ago of 38.6 years. The most prevalent causes of chronic renal failure were diabetes mellitus (16%) and unknown (22%). Of these, 98% had been undergoing hemodialysis before the renal transplant and 2% peritoneal dialysis. 90 cases had received kidneys from unrelated living donors and 10 cases received kidneys from related living donors. 92 cases had their first kidney transplant and 8 cases had their second due to transplant rejection. After the transplantation 36 cases received double drug therapy and 64 had triple drug therapy. Out of 100 patients: 16 were single and 84 were married (12 were renal failure before marriage). Before the transplant the libido was good in 22 cases. 52 were moderate and 26 poor (no libido). Potency was good in 31 cases, moderately good in 48, and poor in 21 cases (impotent). 22 cases did not have children during their marriage (infertile). After the transplant the libido improved, 76 cases were good, moderately well in 16 and poor in 4 cases. Fertility improved and in 27 cases conception culminated into a live birth. Prior to the transplant 15 patients had no children. In conclusion kidney transplant not only improves and increases the quality of life and health of patients with chronic renal failure which compromises the libido, potency and fertility but also improves libido, potency, and fertility and this may bring more satisfaction couples.