Pilonidal sinus disease is a common disorder. We aimed to evaluate the effects of perioperative antibiotherapy on surgical site infections in pilonidal sinus patients who were treated with rhomboid excision with Limberg transposition procedure. A total of 104 patients between 18 and 40 years of age (52 males, 52 females) were included in the study. The patients were divided into two groups and evaluated because of the administration of perioperative antibiotherapy. On the 10th-day, first-month, and third-month follow ups, the status of the wound was recorded. No significant difference was found between the ages, gender distribution, and smoking. Wound dehiscence rate was higher in the non-antibiotic group on the 10th-day, first-month, and third-month follow up, whereas the rate of superficial infection was higher in the antibiotic group. None of the patients had any signs of recurrence. Antibiotic administration did not provide a significant advantage in terms of wound healing, surgical site infection, and recurrence. We think that perioperative antibiotherapy, except for patients with immunosuppression, diffuse cellulitis, or a major coexisting disease who were treated with rhomboid excision with Limberg transposition procedure, does not have any effect on healing surgical site infections and delaying early recurrence. K E Y W O R D S antibiotherapy, infection, Limberg transposition, pilonidal sinus