The aim of this study is to assess the nutritional status of Saudi adolescent girls using weight and height measurements. A cross-sectional sample of 676 girls aged 12 to 19 years were selected from Al-Khober city, in the Eastern Province of Saudi Arabia. At all ages median (50th percentiles) heights of Saudi girls are below the 50th percentiles of the international standards. However, the median weight falls between the 75th and 50th of the standards, which may indicate a trend toward obesity. Using the body mass index for determining the nutritional status of the girls, it was found that 11% of girls were underweight, 61% were normal and 28% were overweight or obese. The findings revealed that adolescent girls in Saudi Arabia face two contrasting nutrition situations, underweight and overweight. Similar findings were reported in other Arabian Gulf countries, indicating the need for intervention programmes to promote better nutrition among school children and adolescents in Saudi Arabia.