The present study was conducted with an aim to study the impact of fast food consumption on meal pattern of adolescents of Delhi (India). A survey was administered on students of different colleges of Delhi. Students were studying different courses in selected colleges of Delhi. Initially, permission was taken from the selected colleges to gather the sample for the present study. Purposive random sampling technique was used to select the sample. Role of demographic parameters, different perception factors and personal behavioural measures were studied. Questionnaire was administered on the sample to collect the data. Overall, it has been found that the consumption of fast food was high among students. Fast food consumption is often associated with higher income groups and adolescents. Background: In the past few decades, the fast growth of the fast-food industry has led to an increased consumption of food prepared away from home that is high in total and saturated fat, as well as sodium, but low in dietary fibre, calcium, and iron. In recent years, there has been a marked increase in the rates of obesity in countries such as India that has been attributed to unhealthy lifestyle practices associated with the introduction of Western-style fast foods that are higher in fat and refined carbohydrates. Fast Foods have become a part of today’s life. Fast Foods are relatively low-cost foods purchased at an outlet featuring quick service and convenience. (Karen Penner, 1999).