Raghubir Singh was the ruler of Maihar from 1852 until his death in 1908.
He was born in 1843 to Mohan Prasad, the Thakur of Maihar. He received his education at Agra College. He married and had three sons: Jadubir Singh, Randhir Singh, and Brajbir Singh.
Following his father's death in 1852, he succeeded him as the Thakur of Maihar. Owing to his minority, the management of the state was placed under the supervision of a British officer, with a promise that once he reached the age of majority, he would be restored to power. The officer also instructed him in his duties as a ruler. He was granted full administrative powers on 2 December 1865. The British government conferred on him the title of Raja as a hereditary distinction on 2 December 1869. On 1 January 1877, he was also granted a personal distinction of a nine-gun salute, which was made hereditary in 1878.
He died in Varanasi on 4 March 1908 and was succeeded by his eldest son, Jadubir Singh, as the Raja of Maihar.