The objective of this study was to determine the prevalence and factors associated with obesity and overweight among adult Saudis using a national survey data from 1990 to 1993. The study population included 1652 men and 1619 women between 30 to 70 years of age. The prevalence of obesity was 49.15% in women and 29.94% in men, while the prevalence of being overweight but not obese was 31.55% in women and 41.91% in men. Obese and overweight women and men were significantly more likely to be between 40–49 years of age, with higher income, and hypertensive.