| Haidernagar | |
| Settlement Type: | Block |
| Pushpin Map: | India Jharkhand#India |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Jharkhand, India |
| Coordinates: | 24.5072°N 83.8672°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Jharkhand |
| Subdivision Type2: | District |
| Subdivision Name2: | Palamu |
| Subdivision Type3: | Block |
| Subdivision Name3: | Haidernagar |
| Unit Pref: | Metric |
| Population Total: | 146139 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Leader Title1: | MLA |
| Leader Name1: | kamlesh kumar singh, Ncp candidate |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Magahi, Hindi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 822115 |
| Registration Plate: | JH 03 |
Haidernagar is one of the administrative blocks of Palamu district, Jharkhand state, India.
Haidarnagar is a rajput-dominated region since 1770 when the Mahthan rajputs hailing from nabinagar captured the town. The nawab of Eshaknagar made a treaty with rajput chief Babu Shiv Dayal Singh to grant zamindari rights and change the name of Eshaknagar to babuandih (spelled babhandih). According to the treaty, 24 out of 55 villages were granted to Shiv Dayal singh.later the estate got divided into babu sahebs of Babhandih,Bilaspur,haidernagar.The nawabs lost honour and value among the locals. Babu Tapeswari Singh went to study law from a college in Bihar.His son Biseswar Dayal Singh was prominent name in the area and resisted british for measuring net sown area in his Estate until 1942 when it was finally done. He was active in politics and the freedom struggle,inspired by gandhian vision he led the workers strike at dalmia paper factory. He donated acres of lands during the bhoodan gramdan movement of Vinoba Bhave.The descendants of main branch of zamindar family lives in babhandih.
Languages spoken there include Asuri, an Austroasiatic language spoken by approximately 17 000 in India, largely in the southern part of Palamu;[4] and Bhojpuri, a tongue in the Bihari language group with almost 40 million speakers, written in both the Devanagari and Kaithi scripts.[5]