FATEH SIṄGH ĀHLŪVĀLĪĀ (d. 1836), son of Bhāg Siṅgh, and a grand-nephew of Jassā Siṅgh Āhlūvālīā, leader of the Āhlūvālīā misl and of the Dal Khālsā, who in 1758 proclaimed the sovereignty of the Sikhs in the Punjab. Fateh Siṅgh succeeded to the Āhlūvālīā chiefship in 1801. He was the chosen companion of Mahārājā Raṇjīt Siṅgh, with whom he in 1802 exchanged turbans in a permanent bond of brotherhood. Fateh Siṅgh took part in almost all the early campaigns of Raṇjīt Siṅgh --- Kasūr (1802-03), Mālvā (1806-08), Kāṅgṛā (1809), Multān (1818), Kashmīr (1819) and Mankerā (1821). He fought in the battle of Haidrū (1813) and held command in the Bhimbar, Rājaurī and Bahāwalpur expeditions. In 1806, Fateh Siṅgh acted as the plenipotentiary of Raṇjīt Siṅgh and signed the first Anglo-Sikh treaty with Lord Lake at the time when the Marāṭhā chief, Jasvant Rāo Holkar, had sought shelter in the Punjab.

         Close association with the ruler of Lahore brought Fateh Siṅgh ample rewards. The Mahārājā had bestowed upon him the districts of Dākhā, Koṭ, Jagrāoṅ, Talvaṇḍī, Naraiṇgaṛh and Rāipur after his Mālvā campaigns. He possessed extensive territories on both sides of the Sutlej yielding an annual revenue of 1,76,000 rupees in 1808; in 1836, his territories were estimated to be worth 16,00,000 rupees annually.

         The cordiality between the two chiefs was strained by Fateh Siṅgh's direct communications with the British over the question of Bhirog and Koṭlā chiefships, the construction by him of a strong citadel at Īsṛū and his constant pleas for British protection. Feeling unsafe at Lahore, Fateh Siṅgh fled across the river in 1825 to his cis-Sutlej territory and sought British protection. Raṇjīt Siṅgh promptly seized his trans-Sutlej possessions, but showed willingness to forgive him if he returned to Lahore.

         The rift between the Āhlūvālīā chief and Mahārājā of Lahore was, however, soon repaired. Fateh Siṅgh returned to Lahore in 1827, and the Mahārājā received him with honour restoring to him all his possessions. Later in his life, Fateh Siṅgh lived at Kapūrthalā where he died in October 1836.