Baba Sohan Singh Bhakna (22 January 1870 – 21 December 1968) was a Sikh revolutionary , the founding president of the Ghadar Party, and a leading member of the party involved in the Ghadar Conspiracy of 1915. Tried at the Lahore Conspiracy trial, Sohan Singh served sixteen years of a life sentence for his part in the conspiracy before he was released in 1930. He later worked closely with the Indian labour movement, devoting considerable time to the Kisan Sabha.