Prehypertension commonly happened to people suffering abdominal obesity. The abdominal obesity prevalence in Gresik District was 21.5%. Dietary compliance of patients with prehypertension and abdominal obesity was needed to decrease hypertension risk. Prehypertension and hypertension correlate with various complications in almost organs. This study aimed to analyze prehypertension determinants among abdominal obesity as conducted on November 2013 - November 2014 using cross sectional design. Respondents were patients coming to primary health care's outpatient unit as 74 people taken consecutively. They were 25 - 64 years old, suffering abdominal obesity, not getting pregnant, non-hypertensive and not in a shock. Respondents were interviewed regarding age, sex, education, physical activities, smoking habits, family records and eating habits as blood pressure and levels of total cholesterol, LDL, HDL, triglyceride and fasting blood glucose measured. Data analysis applied univariate, bivariate with chi square test and multivariate with multiple logistic regressions. The prehypertension prevalence among abdominal obesity was 62.2%. If compared based on sex, males have more prehypertension experience. Triglyceride levels significantly related to prehypertension (PR = 4.620; 95% CI = 1.439 - 14.831; p value = 0.010). Intervention to prevent prehypertension should be implemented since early by modifying lifestyle of people suffering abdominal obesity.