Maharaja Ranjit Singh (13 November 1780 – 27 June 1839), popularly known as Sher-e-Punjab or "Lion of Punjab", was the first Maharaja of the Sikh Empire, which ruled the northwest Indian subcontinent in the early half of the 19th century. He survived smallpox in infancy but lost sight in his left eye. He fought his first battle alongside his father at age 10. After his father died, he fought several wars to expel the Afghans in his teenage years and was proclaimed as the "Maharaja of Punjab" at age 21. His empire grew in the Punjab region under his leadership through 1839.Prior to his rise, the Punjab region had numerous warring misls (confederacies), twelve of which were under Sikh rulers and one Muslim. Ranjit Singh successfully absorbed and united the Sikh misls and took over other local kingdoms to create the Sikh Empire. He repeatedly defeated invasions by outside armies, particularly those arriving from Afghanistan, and established friendly relations with the British.Ranjit Singh's reign introduced reforms, modernisation, investment into infrastructure and general prosperity. His Khalsa army and government included Sikhs, Hindus, Muslims and Europeans. His legacy includes a period of Sikh cultural and artistic renaissance, including the rebuilding of the Harmandir Sahib in Amritsar as well as other major gurudwaras, including Takht Sri Patna Sahib, Bihar and Hazur Sahib Nanded, Maharashtra under his sponsorship.
Maharaja Ranjit Singh was succeeded by his son Kharak Singh.