Kahn Singh Nabha (30 August 1861 – 24 November 1938) was a Punjabi Sikh scholar, writer, anthologist,[2] lexicographer, and encyclopedist.

He was born into a Sikh family to Narain Singh and Har Kaur at the village of Sabaz Banera, located in what was then Patiala State.

He continued to serve Nabha State in several capacities, from Deputy Commissioner in 1896,[2] to Foreign Minister in 1911,[2] to the personal secretary of Maharaja Hira Singh,[1] to judge of the High Court in 1912.

[1] In 1885, he had a chance meeting with Max Arthur Macauliffe which led to a lifelong friendship as well as scholarly collaboration between the two.

When Max Arthur Macauliffe was researching his six volume work entitled "The Sikh Religion", Macauliffe depended a great deal on his advice and guidance in the work he was then doing on Sikh scriptures and the history of early Sikhism;[1] such was his admiration for Kahn Singh that when it was published by the Clarendon Press Kahn Singh was assigned the copyright of the work.