Arghakhachi is one of the regions of Province No. 5 in Nepal. The area headquarter is Sandhikharka. The region covers a territory of 1,193 km² and has a populace (2011) of 197,632.[1] Its neighboring locale are, Palpa in the east, Gulmi in the North, Kapilbastu in the south and Pyuthan in the west. The well known spots are Supa Deurali (Supa Deurali Temple), Argha (MahaKali Temple) and Chhatraganj Temple, Narsing Thana at Hanshapur Bamruk,Sattle Gupha, and so forth.

The area comprises of two pre-unification realms Argha and Khanchi. Argha (Nepali:अर्घा) was the name given to custom offerings made at the previous territory’s fundamental Bhagwati Temple. Khanchi may originate from the word Khajanchi (Nepali:खजाञ्चि) or assess gatherer since the focal point of the last territory was known for its duty office. Both were two of the Chaubisi rajya (24 realms) focused in the Gandaki Basin. In 1786 A.D. (1843 BS) amid the unification of Nepal the two were attached by Gorkha. Later the merger was renamed “Arghakhanchi” and added to Gulmi District. Arghakhanchi turned into a different region in 1961 A.D. (2018 BS)