Sadhu Singh Hamdard (1918–1984) was an Indian freedom fighter and journalist, excelling in both Urdu and Punjabi and an innovative poet, who carried in his name the pseudonym 'Hamdard', "sharing with all the pangs of their hearts," "friendly towards all."
Within his lifetime, Sadhu Singh converted all his property and assets into a public trust for the advancement of Punjabi culture and letters.
Dr Sadhu Singh Hamdard was also awarded the title of Padma Shri by the Central Government in January 1984, but he surrendered the honour in protest against the army action in the precincts of the Golden Temple, Amritsar, in June 1984.
His collection of Punjabi poems in the genre, entitled Ghazal won him a first prize from the Punjab Government in 1963.
An anthology of his prose writings assembled under the title Akkhin Ditha Rus, a travelogue on his visits to Soviet Russia in 1967, also won the Punjab Government's award in 1972–73.
Guru Nanak Dev University, Amritsar, awarded him the Ph.D. degree for his thesis on "Origin and Development of the Punjabi Ghazal."