Objective: To determine the mean platelet volume (MPV) in pre-eclamptic and normotensive women presenting in 3rd trimester of pregnancy. Study Design: Descriptive Cross-sectional study. Place and Duration: Department of Obstetrics & Gynecology, Multan Medical and Dental College/Ibn-e-Sina Hospital, Multan during from 29-May-2019 to 28-Nov-2019. Methodology: 246 pregnant females were included in this study. Patients were assessed for pre-eclampsia those who were history of blood pressure >140 mmHg and 90 mmHg diastolic as seen on examination on three consecutive readings. Data of maternal hemogram taken at presentation was recording using an automated hematology analyzer. mean platelet volume (MPV) was recorded at completion of 36th week of gestation. Results: Mean age of patients included in this study was 34.22±5.02 years. Mean body mass index (BMI) of patients was 24.58±4.65 kg/m2. Mean parity was 2.63±0.78. Mean blood pressure of patients was 128.37±15.06 mmHg. The mean platelet volume in patients with normotensive pregnancy was 9.27±1.31 fL versus 12.49±1.51 fL in patients pre-eclampsia. This difference was statistically significant with p-value of <0.0001. Conclusion: As a biomarker for preeclampsia severity, MPV is a valuable tool. In a clinical context, MPV is regularly acquired during a complete blood count, making it a potentially cost-effective prediction tool for evaluating pre-eclampsia Keywords: Pregnancy, Pre-eclampsia, Mean Platelet Volume (MPV)