Poor nutritional status is a chronic condition and the adult overweight and obesity is increasing rapidly worldwide due to environmental and behavioral changes such as urbanization and modernization. Data on nutritional status among adults in developing countries including the different regions are needed for primary prevention. This study was undertaken to assess the nutritional status among adults (above 18 years) in Batticaloa district and to examine the association of socio-economic, nutritional and lifestyle factors with weight distribution. A Cross-sectional survey was conducted among 400 adults aged above 18 years. Multi-stage sampling method was approached. Data on socio-economic, nutritional and lifestyle factors were collected and anthropometric measurements of weight, height and waist circumference were measured by using appropriate measuring scales.