Berastagi (Dutch spelling: ‘Brastagi’) is a place and subdistrict in North Sumatra, Indonesia, located on the route between Medan and the highlands of Karo. The village was best known when the Dutch founded a boarding school in the 1920s, the Planters School. During the Second World War, this school was used by the Japanese as an internment camp for boys and women. After their twelfth year, the boys had to go to the men’s camp, such as Si Rengo Rengo.

Berastagi’s economy mainly consists of tourism and the sale of fruit and vegetables. The place is known for its passion fruit. The main tourist attractions are the two nearby volcanoes; Sibayak and Sinabung.