Amar Singh Thapa (1759 - October 1814), distinguished as Sanukaji Amar Singh Thapa (Nepali: सानुकाजी अमर सिंह थापा Sānukājī Amar Siṃh Thāpā) was a Nepalese military commander, courtier, minister and regional administrator. He was born as the youngest son of one of the leading Gorkhali Bharadar (state-bearing officer) Birabhadra Thapa. He led battles against many independent principalities in Nepal and a battle against Tibet. He was a Governor of Palpa and retained the post till his death in 1814.