Khasa Prakrit is a Prakrit language of medieval South Asia and a common ancestor language of the Pahari languages, which includes Nepali, Kumaoni, Jaunsari, Mandeali, Garhwali, and Mahasuvi languages. It was commonly referred to as खश (Khaśa), खष (Khaṣa), and खशीर (Khaśīra) in the Sanskrit texts.