Amar Singh Rathore, Rajput nobleman (d. 1644)
Amar Singh Rathore (30 December 1614 - 25 July 1644) was the eldest son of Maharaja Gaj Singh of Marwar and a courtier of the Mughal emperor Shah Jahan in seventeenth-century India.

After he was disinherited and exiled by his family, he entered the Mughals' service. His legendary bravery and battle prowess resulted in elevation to a high rank in the imperial nobility and personal recognition by the emperor, who made him the subedar (governor) of a region that was directly ruled by the emperor himself, Nagaur.In 1644, he was enraged by an attempt by the emperor to levy a fine on him for an unauthorized absence. In the emperor's presence, he stabbed and killed Salabat Khan, who had been asked to collect the fine. He is celebrated in some popular ballads of Rajasthan, Western Uttar Pradesh and Punjab.