Background: - Diet and nutrition is the foremost pivotal component during childhood and adolescence stage, as deficiency of which may cause rudimentary physiological, motor, and cognitive development. Hence, a balanced diet (which comprised of all vital nutrients and minerals) is of prime importance during growth years so as to achieve optimum degree of cognitive and scholastic performance. Objective:-The prime rationale of the present study is to analyze the inter-relationship between different dietary Macro-nutrients (Energy, Carbohydrate, protein, and Fats) and Micro-nutrients (Calcium, Phosphorus, and Iron) with Scholastic Achievement of adolescents. Method: A sample of 164 Government school students from Class 11th and 12th has been selected from Delhi, India using random sampling procedure. Correlational research design has been used for this study. Result: The obtained findings established that significant positive association occurs between dietary Macro-nutrients (Energy, Carbohydrate, protein, and Fats), Micro-nutrients (Calcium, Phosphorus, and Iron) and Scholastic achievement of students. Regression analysis also represented that dimension “Energy” of Macro-nutrient is act as notable predictor of Scholastic Achievement. Conclusion: Dietary Macro-nutrients (Energy, Carbohydrate, protein, and Fats) and Micro-nutrients (Calcium, Phosphorus, and Iron) play significant role for the acquiring higher Scholastic performance among adolescents.