Jigme Dorji Wangchuck ( Wylie: 'jigs med rdo rje dbang phyug; 2 May 1929 – 21 July 1972) was the Third Druk Gyalpo of Bhutan.
He began to open Bhutan to the outside world, began modernization, and took the first steps toward democratization. Upon succeeding his father, Jigme Wangchuck, on 27 October 1952, Jigme Dorji Wangchuck put an end to feudalism and slavery and released all remaining serfs. He encouraged certain modern inventions to assist the local peasantry and introduced wheeled vehicles, previously the transportation of crops and people were done manually. He established a High Court and reorganized the judicial system. In 1953, he established the Tshogdu or National Assembly – Bhutan's first unicameral Parliament.
During his reign Bhutan's first planned economic development plan was drafted. In 1961, a five-year economic development plan was launched for the years 1961–1966. Bhutan is still following this economic development plan. He created Bhutan's first Council of Ministers in 1968. In 1963, Bhutan joined the Colombo Plan. During his 20-year reign, 1770 km of roads were constructed, the number of schools rose to 102 and 6 hospitals were established. In 1971, he set up a Planning Commission.
Neighboring Tibet's union with the People's Republic of China in 1951 encouraged the king to foster stronger ties with foreign nations, especially India, and culminated with Bhutan joining the United Nations in 1971. He empowered the National Assembly to remove him or any of his successors with a two-thirds majority.