Bhagat Singh (September 28, 1907 – March 23, 1931) was an Indian freedom fighter, considered to be one of the most influential revolutionaries of the Indian independence movement. He is often referred to as Shaheed Bhagat Singh. Born to a family which had earlier been involved in revolutionary activities against the British Raj in India, Singh, as a teenager, had studied European revolutionary movements and was attracted to anarchism and communism. He became involved in numerous revolutionary organizations. He quickly rose through the ranks of the Hindustan Republican Association (HRA) and became one of its leaders, converting it to the Hindustan Socialist Republican Association (HSRA). Singh gained support when he underwent a 64-day fast in jail, demanding equal rights for Indian and British political prisoners. He was hanged for shooting a police officer in response to the killing of veteran freedom fighter Lala Lajpat Rai. His legacy prompted youth in India to begin fighting for Indian independence and also increased the rise of socialism in India.

 Bhagat Singh was born into a Sandhu Jat family to Sardar Kishan Singh Sandhu and Vidyavati in the Khatkar Kalan village near Banga in the Lyallpur district of Punjab. Singh's given name of Bhagat means "devotee". He came from a patriotic Sikh family, some of whom had participated in movements supporting the independence of India and others who had served in Maharaja Ranjit Singh's army. His grandfather, Arjun Singh, was a follower of Swami Dayananda Saraswati's Hindu reformist movement, Arya Samaj, which would carry a heavy influence on Singh. His uncles, Ajit Singh and Swaran Singh, as well as his father were members of the Ghadar Party, led by Kartar Singh Sarabha Grewal and Har Dayal. Ajit Singh was forced to flee to Persia because of pending cases against him while Swaran Singh was hanged on December 19, 1927 for his involvement in the Kakori train robbery of 1925.