The Association between Different Measurements of Obesity and the Prevalence of HypertensionPurpose -To evaluate the association between body mass index (BMI), waist-hip ratio and waist circumference with the prevalence of hypertension in a representative sample of 1088 adults of Porto Alegre (RS), Brazil.Methods -In this cross-sectional survey, subjects were considered as having hypertension if they had systolic blood pressure 160mmHg or diastolic90mmHg, and were considered obese if they had BMI 27kg/m 2 , or had a waist-hip-ratio 0.95cm (men) or 0.80 (women) or had a waist circumference 96 (men) or 92 (women).Results -Obesity defined by the BMI was associated with hypertension in both genders (RR 1.9, CI 1.0 -3.2 in men; RR 2.2, CI 1.3 -3.8 in women).The other indices were significantly associated with hypertension just in women.Conclusion -BMI 27.0kg/m 2 was strongly associated with increased odds to have hypertension.Similar magnitude of the association with the other indices indicate their utility to estimate the risk of hypertension. Key-words: