Background: Adolescents' nutritional status is crucial to their overall health and development. Various socio-economic factors play significant roles in influencing this status, especially in rural areas. Objective: The study aimed to identify the factors contributing to adolescents' nutritional status and to examine the relationship between these factors and the adolescents' socio-economic characteristics in Bagha, Rajshahi. Method: Data were collected from 250 adolescents using structured interview schedules. Key variables studied included the adolescents' education, mothers' education, family income, food intake, and nutritional knowledge. Correlation and multiple linear regression analyses were conducted to evaluate the associations between these variables and the adolescents' BMI and nutritional status. Result: The study revealed that adolescents' BMI had significant positive correlations with their education, mothers' education, family income, food intake, and nutritional knowledge. An inverse correlation was found between nutritional status and disease information. Other factors, such as gender, religion, family size, fathers' education, and hygiene practices, showed positive but non-significant associations. Negative, non-significant correlations were observed with age, physical activity, transportation, leisure activities, and participation in nutrition programs. A substantial majority (89.6%) of respondents were inactive in calorie intake, with only 2.4% being active. Most adolescents (79.6%) were underweight, while 20% had normal weight. Most mothers (63.3%) and fathers (55%) had primary-level education. Multiple linear regression analysis indicated that annual family income, food intake, and nutritional awareness were positively correlated with nutritional status, whereas disease information had a significant negative correlation. Conclusions: The findings highlight the critical impact of socio-economic factors on adolescents' nutritional status. .......