Bhagat Singh (Punjabi (Punjabi language): ??? ???? ???? ????, IPA2p????t? s????) (27 September 1907 – 23 March 1931) was an Indian freedom fighter, considered to be one of the most influential revolutionaries (revolutionary) of the Indian independence movement. He is often referred to as Shaheed Bhagat Singh (the word shaheed (martyrdom in Islam) means "martyr").

Born to a Jat (Jat people) Sikh 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 (Hindustan Socialist 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.