Aim: Transiliac posterior plate osteosynthesis is one of the surgical option for treating instable pelvic fractures. In this report, we aimed to evaluate clinical results of patients with pelvic fractures treated with transiliac plate osteosynthesis by minimally invasive methods. Material and Method: Patients with instable pelvic fractures treated with minimally invasive transiliac plate osteosynthesis were evaluated retrospectively. Radiographic assessments were made on pelvic x-rays using Tornetta and Matta methods. Functional results were evaluated using Hannover pelvic outcome score. Results: This study included 21 patients with a mean age of 37.8 years (range 17-62yrs). The mean follow-up period was 21.2 (6-38) months. According to AO classification, 14 patients had a C1 and 6 patients had a C2 and 1 patients had a C3 type pelvic fractures. Clinical results were excellent (4 point) in 12 patients, good (3 point) in 4 patients, fair (2 point) in 5 patients according to Hannover pelvic outcome score. According to radiological assessments, the results were excellent (< 5 mm) in 13 patients, good (5-10 mm dislocation) in 6 patients and fair (10-20 mm dislocation) in 2 patients. Superficial infection was detected in two patients. Loss of reduction occurred in two patients. Discussion: Minimally invasive transiliac plate osteosynthesis for treating pelvic fractures is a method with good clinical results and low neurovascular complication risks.