Tögs-Ochiryn Namnansüren, full title: Sain Noyon Khan Namnansüren, was a powerful hereditary prince and prominent early 20th-century Mongolian independence leader. He served as the first prime minister of Mongolia under the Bogd Khan from 1912 until 1915, when the office of prime minister was abolished. He was subsequently appointed Minister of the Army.

The Bogd Khanate of Mongolia was the de facto government of Outer Mongolia between 1911 and 1915 and again from 1921 to 1924. By the spring of 1911, some prominent Mongol nobles including Prince Tögs-Ochiryn Namnansüren persuaded the Jebstundamba Khutukhtu to convene a meeting of nobles and ecclesiastical officials to discuss independence from Qing China. On 30 November 1911 the Mongols established the Temporary Government of Khalkha. On 29 December 1911 the Mongols declared their independence from the collapsing Qing dynasty following the outbreak of the Xinhai Revolution. They installed as theocratic sovereign the 8th Bogd Gegeen, highest authority of Tibetan Buddhism in Mongolia, who took the title Bogd Khan or "Holy Ruler". The Bogd Khaan was last khagan of the Mongols. This ushered in the period of "Theocratic Mongolia", and the realm of the Bogd Khan is usually known as the "Bogd Khanate".