The Rana dynasty (Nepali: राणा शासन Rāņā shāsan) was a Khas Chhetri Rajput dynasty which ruled the Kingdom of Nepal from 1846 until 1951, reducing the Shah monarch to a figurehead and making Prime Minister and other government positions hereditary.
Tyranny, isolationism, debauchery, economic exploitation and religious persecution characterized Rana rule. This changed in 1951 with the promulgation of a new constitution, when power shifted back to the monarchy of King Tribhuvan. The dynasty is descended from Bal Narsingh Kunwar of Kaski who moved to Gorkha in the early 18th century and entered the service of Raja Nara Bhupal Shah around 1740, and of Bhimsen Thapa (1775–1839), who is counted among the National heroes of Nepal.
Nine Rana rulers took the hereditary office(s) of Prime Minister, Supreme Commander-in-Chief and Grand Master of the Royal Orders. All were styled (self proclaimed) Maharaja of Lamjung and Kaski.
Succession to the prime ministership and the title of Maharaja of Lamjung and Kaski was by agnatic seniority, by which the oldest male heir among the sons of equal (a-class) marriages in a generation would succeed. The order of succession was determined by seniority, with each eligible male heir holding a military command, as follows: