Rajnagar may refer to:
Places Bangladesh Rajnagar Upazila, a subdivision in Maulvibazar District, Bangladesh
India Rajnagar, Bihar, a town in Madhubani District, Bihar Rajnagar, Bihar Assembly constituency, the Bihar assembly constituency centered around the town Rajnagar, Chhatarpur, a town in Madhya Pradesh Rajnagar, Madhya Pradesh Assembly constituency, the Madhya Pradesh assembly constituency centered around the town Rajnagar, Birbhum, a town in West Bengal Rajnagar, Birbhum (Vidhan Sabha constituency), the defunct West Bengal constituency centered around the town Rajnagar (community development block), Birbhum district, West Bengal Rajnagar, Tripura Assembly constituency, an assembly constituency in Tripura state Rajnagar, Himachal Pradesh Assembly constituency, a defunct assembly constituency in Himachal Pradesh Rajnagar, Bhiwandi, a village in Maharashtra Raj Nagar Extension, an area in Ghaziabad, Uttar Pradesh Rajnagar, Murshidabad, a village in West Bengal Rajnagar, Seraikela Kharsawan, a village in Jharkhand
See also Rajnagar Assembly constituency (disambiguation) Rajanagar Assembly constituency in Kendrapara district, Odisha Rajanagaram, neighbourhood in Coastal Andhra, Andhra Pradesh, India Rajanagaram mandal, subdivision of Andhra Pradesh centred on the neighbourhood Rajanagaram (Assembly constituency) Rajpur (disambiguation)