Cardiovascular diseases remain the Philippines' leading cause of mortality, with hypertension as a prevalent contributory risk factor. We took part in May Measurement Month 2017 (MMM17), a global initiative to raise awareness of high blood pressure (BP) and to serve as a temporary solution to the lack of screening programs worldwide. Following the standard MMM protocol, data for 271 604 screened individuals were submitted from the Philippines. After multiple imputation, 91 994 (34.3%) were hypertensive; 28 662 out of 205 158 participants (14.0%) not receiving treatment had hypertension; and of the 60 370 receiving treatment, 25 144 (41.6%) had uncontrolled BP. Blood pressures were significantly higher in the overweight and obese, current smokers, in participants receiving antihypertensive medication, those with previous myocardial infarction or stroke. The BP measurements were relatively lower when taken on the left arm, and in pregnant women. A slightly higher systolic BP was noted in participants who reported no alcohol intake. Blood pressures recorded during the weekends were highest, and the lowest readings were obtained on Tuesdays. MMM17 was the largest BP screening campaign conducted in the Philippines. Opportunistic BP screening, harnessing volunteers, are a cost-effective public health measure to improve awareness and treatment rates of raised BP. These may help provide additional information that can guide medical practitioners and health officials in drafting preventive and therapeutic measures to improve control rates and long-term outcomes of hypertensive individuals in the population.