OBJECTIVE To evaluate the single scrotal-incision orchidopexy (SSIO) technique in patients with an undescended testis palpable in the inguinal canal or below the external inguinal ring. METHODS Between January 2011 and December 2013 we performed 100 SSIOs in 89 patients. The mean (range) follow-up was 9 (3-36) months. RESULTS In 88 testes the SSIO was performed with no difficulties. In four patients an additional dissection by opening the external ring and canal was necessary; none of these patients developed an inguinal hernia after surgery. In eight patients conversion to an inguinal approach was necessary because of difficulty in controlling the hernial sacs and inadequate mobilisation. At the follow-up assessment, of the 89 patients, none developed testicular atrophy, one (1%) had wound dehiscence and four (5%) had a scrotal haematoma. There was no statistically significant difference between the testicular size at baseline and that during the follow-up. At 3 months after surgery the overall cosmetic result was excellent. CONCLUSIONS The SSIO is minimal-access surgery allowing less dissection, less discomfort for the patient, rapid healing, excellent cosmetic results and a good success rate. This technique is safe and effective for undescended testes palpable in the inguinal canal or below the external inguinal ring.