COVID-19 has created a new normal for the world. The social restrictions that are linked to the epidemic control measures have negatively impacted the daily routine of the population.Obesity is major contributor to the rise of non-communicable diseases in South Asia and Middle-East. A trend of increasing obesity had already been noticed in the Pakistani youth.We need to ascertain the effect of COVID-19 on the BMI (body mass index) of our youth so that the adverse effects may be countered.Objective: This study was conducted to determine the impact of COVID-19 on the BMI of university students in Pakistan. Subjects & Methods: A cross-sectional multi-center study was conducted through an online questionnaire among the university students of Pakistan. The BMI before and 6 months after the COVID-19 lockdown was assessed. The changes in caloric intake and physical activity were also assessed. Paired student's t-test, Chi-square test and McNemar tests were used to