Major General Nawab Sir Umar Hayat Khan Tiwana GBE KCIE MVO (5 October 1874 – 24 March 1944), was a soldier of the Indian Empire, one of the largest landholders in the Punjab, and an elected member of the Council of State of India.

[2][8] In 1907, moving beyond his career as a soldier, the management of his family estates in the Punjab, and his role as an hereditary Provincial Darbari, Khan became an Attaché to HM the Amir of Afghanistan.

[2] In 1910, in the Imperial legislature, Khan called for Europeans to supervise districts as "...disinterested men to safeguard the interests of all".

[2] He can be credited with taking Sultan Khan, a talented chess player whose career he promoted whilst in the United Kingdom to London.

[16] In 1924, Khan appeared as a significant witness in the O'Dwyer v. Nair libel case, heard in the High Court in London over five weeks from 30 April 1924.

[17] O'Dwyer won his case,[17] with the sole dissenting member of the jury being the political philosopher Harold Laski.