Sadri (also Nagpuri) is an Indo-Aryan language spoken in the Indian states of Jharkhand, Bihar, Chhattisgarh and Odisha. It is the native language of the Sadaan, an ethino-linguistic group of the of Chota Nagpur region. In addition to native speaker, Sadri is also used as a lingua-fraca by large number of tribal groups such as: Kharia, Munda, Bhumij, Kurukh and many of these tribal group have adopted Sadri as their first language. It spoken by many Tea-tribes of Assam, West Bengal and Bangladesh.