Background: Hypertension is a great health problem in Indonesia. The cause of hypertension was high fat intake and low physical activity. In Indonesia in 2013, the prevalence of hipertension was 28, 5%, and in Yogyakarta was 25, 7%.

Objectives: To Know the correlation between fat intake and phisical activity and hypertension among outpatients in RSUD Panembahan Senopati Bantul.

Methods: This was an observasional study with case-control design. Cases was outpatient aged 30–60 years with hypertension. Controls was outpatient aged 30-60 years without hypertension. Data were analyzed by using univariable (descriptive), bivariable (chi-square test), and multivariable anaysis (logistic regression).

Results: Bivariat analysis showed that there was significant relationship between fat intake (p= 0,009; OR= 3,839; CI 95%= 1,357–10,861), outpatient aged (p= 0,008; OR= 3, 37; CI= 1,340-8,476) and hypertension. However, no significant relationship between physical activity (τ= 0,075; p= 0,451), Body mass index (p= 0,065; OR= 2,155; CI 95%= 0,949–4,893) and hypertension. Multivariate analysis showed that variables most influential against an hypertension is fat intake (p= 0,010; OR (CI 95%)= 4,246 (1,418–12,721)).

Conclusions: There was significant correlation between fat intake, aged, and hypertension. However, physical activity and body mass index failed to prove the correlation with hypertension.