Lahnda, also known as Lahndi or Western Punjabi, is a group of Punjabi language varieties within the north-western branch of the Indo-Aryan language family, spoken in the Punjab, Hazara, and Azad Kashmir regions of Pakistan. It is defined in the ISO 639 standard as a "macrolanguage" or as a "series of dialects" by other authors. Its validity as a linguistic genetic grouping is not certain. The terms "Lahnda" and "Western Punjabi" are exonyms employed by linguists, and are not used by the speakers themselves, who refer to their respective dialects or simply the language "Punjabi".