Khadka (Nepali: खड्का), anciently called as Khaḍka (Sanskrit: खड्गा), is a surname of Khas/Chhetri caste.
[1]: 22 Khadga was an ancient Paikelā (warrior) rank along with Thāpā, Rānā and Buḍhā chhetri.
[1]: 89 Khadka is also a surname of Magar caste which is sub-clan of Rana Magar clan “i.e.” the last magar King Mansingh Khadka Magar of Majhakot (Gorkha), before Drabya Bikram Shah became King of Gorkha Prime Minister of Nepal Jung Bahadur Kunwar Rana belonged to the Kunwar family[2] of the Khadka clan.
[4] They had six sons over 10–12 years, one of whom was recognized by the title of Kum̐vara Khaḍkā for bravery displayed in the battle against Raja of Satān Koṭ.
[4] The title was used by his descendants.... After the premiership of Jung Bahadur Kunwar, the Kunwar family through a royal order took up the title of Rana and claimed themselves as Rajput family of Chittor in India and founded the Rana dynasty.