Mongolian Sign Language (Mongolian: Монгол дохионы хэл, Mongol dokhiony khel) is a sign language used in Mongolia. Ethnologue estimates that there were between 10,000 to 147,000 deaf people in Mongolia as of 1998; however, it is not known how many of those are users of MSL.Linda Ball, a Peace Corps volunteer in Mongolia, is believed to have created the first dictionary of MSL in 1995.