Thapathali Durbar was a palace complex in Kathmandu, the capital of Nepal. Thapathali means abode of the Thapas. It was initially built by Nain Singh Thapa of the Thapa dynasty but was later occupied by Jung Bahadur Rana, as prime minister, the executive head of Nepal. The palace complex, located north of the Bagmati river, encompasses an impressive and vast array of courtyards, gardens, and buildings. Many palaces and buildings were built throughout late 1840s to 1900, initially by Nain Singh Thapa, a member of the aristocratic Thapa family and brother of Bhimsen Thapa, and later was acquired by Nain Singh Thapa's grandson Jung Bahadur Rana. Further additions were made by successive Ranas up to the 19th century.

Thapa dynasty or Thapa noble family also known as Dynasty of Borlang was a Chhetri political family that handled Nepali administration affairs between 1806 and 1837 A.D. and 1843 to 1845 A.D. as Mukhtiyar. This was one of the four noble families to be involved in the active politics of the Kingdom of Nepal, along with the Shah dynasty, Basnyat family, and the Pande dynasty before the rise of the Rana dynastyor Kunwar family. At the end of 18th century, Thapas had extreme dominance over Nepalese Darbar politics alternatively contesting for central power against the Pande family. Bir Bhadra Thapa was a Thapa of Chhetri group and leading Bharadar during Unification of Nepal. His grandson Bhimsen Thapa became Mukhtiyar of Nepal and established Thapa dynasty to the dominating position of central court politics of Nepal.