Baj Singh (d. 1716), a Bal Jatt, was a native of Mirpur Patti, a village in Amritsar district of the Punjab. A devoted Sikh, Baj Singh received the rites of initiation at the hands of Guru Gobind Singh himself. He accompanied the Guru to the Deccan in 1708 and was one of the five Sikhs sent by the dying Guru to the Punjab with Banda Singh Bahadur with the mission of putting an end to Mughal rule. He took part in all of Banda Singh's major campaigns.