Background: Pilonidal sinus disease is a chronic disease of the sacrococcygeal region, which commonly occurs in young adults. The male population is affected more than the female one. Many surgical techniques have been described in the literature for the treatment of this disease. This study aimed to assess the effectiveness and short term results of the modified Limberg flap technique in the treatment of pilonidal sinus disease. Patients and methods: This randomized clinical trial study was carried out in Zagazig university hospital. It included eighteen patients with pilonidal sinus disease who attended GIT Unit, General Surgery Department, during the period from January 2020 to August 2020. The 18 patients underwent the modified limberg flap procedure. All patients were subjected to Demographic data taking, complete clinical examination and Laboratory investigations. Results: The mean operative time was 63.056±6.673 min. The healing time and duration of work-off were 15.833 ± 2.256 and 16.833 ± 2.256 days respectively. Two patients were complicated. Combined hematoma and dehiscense occurred in one patient (5.6%) and seroma occurred in one patient (5.6%). No patients had a recurrence. Conclusion: modified Limberg flap technique showed early healing, short duration of work-off, and a low rate of complications and recurrence.