Information and research on Mongolian Sign Language is scant. To date, only one dictionary is available in the United States (Badnaa and Boll 1995), and even that dictionary presents only a subset of the signs employed in Mongolia. The present study describes the kinship system used in Mongolian Sign Language (MSL) based on data elicited from three users of MSL. The purpose of this investigation is twofold: first, to determine what and how kinship terms are used and, second, to determine the extent to which other languages and cultural practices have influenced kinship terms in MSL. To address the second objective, a brief analysis of kinship terms in spoken Mongolian, Russian, Chinese, Russian Sign Language (RSL), and Chinese Sign Language (CSL) is presented. (Contains 3 notes and 4 figures.)