Khan Bahadur Raja Jahandad Khan, CIE (1848–1905) was a descendant of Sultan Sarang and a Chief of Gakhars.
Raja Jahandad was conferred the title of Khan Bahadur on 24 May 1881 and was made an Companion of the Order of the Indian Empire (CIE) on 1st Jan, 1904. He was also invested with the gold medal of the Kaiser-i-Hind by the Viceroy of India, Lord Hardinge, in recognition of the many years of service he had so loyally given the British Raj in India. Raja Jahandad Khan remained Assistant Commissioner, Punjab and was sent as an envoy of the British Government of India to Afghanistan to congratulate Amir Habibullah Khan on his accession.
As a young man, Raja Jahandad inherited Khanpur (NWFP) estate containing 60 villages with area of 120 square miles (310 km2) from his father Raja Haider Bukhsh. Khanpur estate was founded by Fateh Khan s/o Sultan Said Khan at the end of 16th century.
Raja Jahandad Khan married a daughter of the Afghan Amir Sher Ali Khan and had three sons - Captain Raja Haider Zaman, Raja Manochehar Khan and Raja Safdar Khan. His descendants are still styled as Chiefs of the Gakhars and hold considerable influence in parts of the Punjab and Khyber-Pakhtunkhwa.