Prevalence of isolated systolic hypertension (ISH) was examined among the Bhotia of Chamoli district, Uttaranchal. Occurrence of ISH was found to be 4.92% among the Bhotia. This prevalence was 2.5% in men and 2.42% in women. The study revealed an increasing trend of occurrence of ISH with increasing age. The determinants like age, abdominal obesity, tobacco chewing and education of the subjects emerged as important risk factors of ISH among the Bhotia of Uttaranchal.