H ypertension in pregnancy occurs in 12.7% of pregnancies in Indonesia. This event has many risk factors and one of them is the age of the mother. The proportion of the Indonesian population who are pregnant (aged 10-54 years) is 2.68%, where some of them are women with advanced maternal age. The advanced maternal age is 35 years and over. This needs to be prevented because pregnancy hypertension can result in morbidity and mortality in both mother and baby. The study was conducted on 178 secondary data medical records of pregnant women who visited during the period between December 2015 - December 2016 in December 2016 at Ulin Banjarmasin - South Kalimantan Hospital. Data regarding maternal age along with the incidence of hypertension in pregnancy were taken by consecutive non-random sampling. This study uses a cross-sectional design. The relationship between maternal age and pregnancy hypertension in pregnant women was analyzed using Chi Square test. Of a total of 178 samples, 54 samples were aged ≥ 35 years, while 124 other samples were <35 years old. For the incidence of pregnancy hypertension, 38 samples had pregnancy hypertension, while 140 samples were normotensive. Data analysis using Chi Square test did not find any significant relationship between age (p = 0.167) with pregnancy hypertension. In this study there was no significant relationship between maternal age and the incidence of pregnancy hypertension, but comparatively there was an increase in the prevalence of maternal age groups ≥ 35 years with pregnancy hypertension compared with maternal age groups <35 years with pregnancy hypertension.