Rajnagar

Rajnagar may refer to:

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