An attempt has been made to determine the association between academic performance and nutritional status among the primary school students of Bishnupur district, Manipur. The study found that the students' prevalence of stunting, being underweight, and wasting were 14.6%, 11.9%, and 5.3%, respectively. Nutritional status:The overall prevalence of stunting was 14.6% (95% CI: 11.2% - 18.1%), and the majority of underweight and wasting were 11.9% (95% CI: 8.7% - 15.1%) and 5.3% (95% CI: 3.1% - 7.5%) respectively. The prevalence of wasting among females was significantly higher than among males.Nutritional status and academic performance: There was a significant mean difference in the average marks of children with undernutrition and those without. After adjusting the factors, there was a significant association between students’ academic performance and the nutritional indicators (weight-for-age, height-for-age and weight-for-age) along with family income. Monthly income less than Rs. 10,000 (AOR = 0.12, 95% CI 0.09, 0.22), stunted (AOR = 0.26, 95% CI 0.12, 0.51), underweight (AOR = 0.57, 95% CI 0.23, 0.87), wasted (AOR = 0.76, 95% CI 0.49, 0.85).