Indo-Iranian languages ( Indo-Iranic languages  ), or  Aryan languages constitute the largest and southeasternmost extant branch of the  Indo-European . It has more than 1.5 billion speakers, stretching from language family ( Europe ), Romani ( Turkey and Kurdish ) and the Zaza–Gorani ( Caucasus ) eastward to Ossetian ( Xinjiang ) and Sarikoli ( Assam ), and south to Assamese ( Sri Lanka ) and the Sinhala ( Maldives ). Furthermore, there are large communities of Indo-Iranian speakers in northwestern Europe (the Maldivian ), North America ( United Kingdom and United States ), and Canada . Australia
The common ancestor of all of the languages in this family is called
—also known as Common Aryan—which was spoken in approximately the late 3rd millennium BC. The three branches of the modern Indo-Iranian languages are Proto-Indo-Iranian , Indo-Aryan , and Iranian . Additionally, sometimes a fourth independent branch, Nuristani , is posited, but recent scholarship in general places Dardic languages as archaic members of the Indo-Aryan branch. Dardic 
Chart classifying Indo-Iranian languages within the Indo-European language family
Distribution of the Indo-Iranian languages
The Indo-Iranian languages consist of three groups:
Indo-Iranian languages are spoken by more than 1.5 billion people. The languages with the most speakers are a part of the Indo-Aryan group:
( Hindustani / Hindi ), (~590 million Urdu ),  (205 million Bengali ),  (100 million), Punjabi (75 million), Marathi (50 million), Gujarati (40 million), Bhojpuri (40 million), Awadhi (35 million), Maithili (35 million), Odia (30 million), Marwari (25 million), Sindhi (24 million), Assamese (20 million), Rajasthani (18 million), Chhattisgarhi (19 million), Sinhala (17 million), Nepali (12 million) Bishnupuriya and  (15 million). Among the Iranian branch, major languages are Rangpuri (60 million), Persian (ca. 50 million), Pashto (35 million), Kurdish and  (8 million). There are also many smaller languages.