Sindhi (سِنڌِي, Sindhī, [sɪndʱiː]) is an Indo-Aryan language belonging to the Indo-Iranian branch of the Indo-European language family. It is primarily spoken by the Sindhi people native to the Pakistani province of Sindh, where the language has official status. It constitutes the mother tongue of over 34 million people in Pakistan, primarily concentrated in Sindh; with historic communities in neighbouring Balochistan as well. It is also spoken by 1.7 million people in India, mostly by the descendants of partition-era migrants; with it having the status of a scheduled language in the country without any state-level official status. Sindhi is written in the Sindhi alphabet of the Perso-Arabic script, the sole official script for the language in Pakistan; while in India, both the Perso-Arabic and Devanagari scripts are used.
With over 37 million native speakers, Sindhi is a major South Asian language, being the most-widely spoken language in southern Pakistan and third most-widely spoken in the entirety of Pakistan (after Punjabi and Pashto). The language is also geographically spread out of South Asia as it is spoken by the Sindhi diaspora, present around the world, primarily in the Gulf states, the Western world and the Far East.