Sarangdhar Sinha (6 February 1899 – 30 June 1982) was an Indian legislator, parliamentarian and academician. He was elected to the Lok Sabha, lower house of the Parliament of India from Patna in Bihar. Sarangdhar belonged to a landowning family from Repura in Ballia, Uttar Pradesh. His father Maharajkumar Ramdin Singh had shifted to Patna in the 19th century, where he established the Khadga Vilas Press, also known as the K.V. Press. Rai Bahadur Ram Ranvijay Singh and Ramji Singh were his elder and younger brothers, respectively.