Maharaja Rameshwar Singh Bahadur (ruled 1898 to 1929) (born 16 January 1860, died 3 July 1929). He became Maharaja of Darbhanga after the death of his elder brother Lakshmeshwar Singh, who died without issue.
He was appointed to the Indian Civil Service in 1878, serving as assistant magistrate successively at Darbhanga, Chhapra, and Bhagalpur. Maharaja died in July 1929, leaving behind two sons , Maharajkumar Kameshwar Singh and Maharajkumar Vishveshwar Singh