The Lahore Conspiracy Case was registered against Bhagat Singh. It is important to understand that the Lahore Conspiracy Case refers to a significant event in the Indian independence movement. Bhagat Singh, along with his associates Rajguru and Sukhdev, were involved in the bombing of the Central Legislative Assembly in Delhi in 1929. This act was a response to the repressive British colonial rule in India. The Lahore Conspiracy Case was filed against them for their involvement in this act of revolution. Bhagat Singh became a symbol of resistance and bravery in the fight for Indian independence. It is important to note that while other prominent figures like V.D. Savarkar, Chandrashekhar Azad, and Aurobindo Ghosh played significant roles in the freedom struggle, they were not directly involved in the Lahore Conspiracy Case.