Sukhdev Thapar
Born/Date of Birthday: 15 May 1907
Place of Birth: Ludhiana, Punjab, British India, (present-day Punjab, India)
Died: 23 March 1931 (aged 23), Lahore, Punjab, British India, (present-day Lahore Central Jail, Punjab, Pakistan)
Cause of death: Execution by hanging
Nationality: Indian
Occupation: Revolutionary
Organization: HSRA, Naujawan Bharat Sabha
Movement: Indian Independence movement
Siblings: Jagdish Chand Thapar, Mathuradass Thapar, Jaidev Thapar, Prakash Chand Thapar, Krishna Thapar
Children: Madhu Sehgal
Parents: Ramlal Thapar, Ralli Devi

Sukhdev Thapar (15 May 1907 – 23 March 1931) was an Indian revolutionary who worked to make India independent from the British Raj along with his best friends and partners Bhagat Singh and Shivaram Rajguru. A senior member of the Hindustan Socialist Republican Association, he participated in several actions alongside Singh and Rajguru, and was hanged by the British government on 23 March 1931 at the age of 23.

Early life
Sukhdev Thapar was born in Ludhiana, Punjab, British Raj on 15 May 1907 to Ramlal Thapar and Ralli Devi.

He belonged to a Punjabi khatri (kshatriya) family of Hindu community and he was brought up by his uncle Lala Achintram after the death of his father.

Revolutionary activities
Hindustan Socialist republican association
Sukhdev Thapar was a member of the Hindustan Socialist Republican Association (HSRA) and Naujawan Bharat Sabha (NJSB), and organised revolutionary cells in Punjab and other areas of North India. He was the chief of Punjab unit of HSRA and instrumental in taking decisions.

Sukhdev participated in numerous revolutionary activities such as a prison hunger strike in 1929; he is best known for his assaults in the Lahore Conspiracy Case (1929–1930). He is best remembered for his involvement in the assassination of Assistant Superintendent of Police, J. P. Saunders, on 17 December 1928, by Bhagat Singh and Shivaram Rajguru, undertaken in response to the violent death of the veteran leader Lala Lajpat Rai.

Lahore Conspiracy Case
Sukhdev was the prime accused in the Lahore Conspiracy Case of 1929, whose official title was "Crown versus Sukhdev and others." The first information report (FIR) of the case, filed by Hamilton Harding, Senior Superintendent of police, in the court of R.S. Pandit, the Special Magistrate in April 1929, mentions Sukhdev as accused number 1. It describes him as Swami alias villager, son of Ram Lal, caste Thapar Khatri.

On 23 March 1931, Thapar was hanged in Lahore Central Jail, along with Bhagat Singh and Shivaram Rajguru. Their bodies were secretly cremated at the banks of the River Sutlej.

Reactions to the executions
The executions were widely reported in the press, especially as they took place on the eve of the annual convention of the Indian National Congress in Karachi. The New York Times reported:

A reign of terror in the city of Cawnpore in the United Provinces and an attack on Mahatma Gandhi by a youth outside Karachi were among the answers of the Indian extremists today to the hanging of Bhagat Singh and two fellow-assassins.

B. R. Ambedkar, writing in an editorial in his newspaper Janata, blamed the British government for its decision to go ahead with the executions, despite strong popular support for the revolutionaries. He felt that the decision to execute the trio was not taken in the true spirit of justice, but was driven by the Labour Party-led British government's fear of backlash from the Conservative Party and a need to appease public opinion in England. The Gandhi-Irwin pact, signed just weeks before the execution, was viewed by the Conservatives as having dented the prestige of the British Empire. In such a situation, if the British government or the Viceroy of India commuted the death sentence awarded to the trio convicted of assassinating a British policeman, it would have given the Conservatives more ammunition to criticize an already weak British government in the parliament.

Legacy
National Martyrs Memorial is located at Hussainiwala, where Sukhdev, along with Bhagat Singh and Rajguru, were cremated. A Martyrs' Day (Shaheed Diwas) is observed on March 23 in their memory. Tributes and homage is paid at the memorial.

Shaheed Sukhdev College of Business Studies, a constituent college of the University of Delhi, is named in memory of Sukhdev. It was established in August 1987.

Amar Shaheed Sukhdev Thapar Inter-State Bus Terminal is the main bus stand of Ludhiana city, the birthplace of Sukhdev.