Laoseng (; also known as ) is a Loloish language of northern Laos. David Bradley (2007)Bradley, David (2007). "Language Endangerment in China and Mainland Southeast Asia". In Matthias Brenzinger, ed. Language diversity endangered. New York: Mouton de Gruyter. lists law21 sɛŋ21 as the autonym.
Kingsada (1999) documents of Chaho village, Bun Tay District, Phongsaly Province, while Kato (2008) documents of Namnat village, Nyot U District, Phongsaly Province.
References
Kingsadā, Thō̜ngphet, and Tadahiko Shintani. 1999 Basic Vocabularies of the Languages Spoken in Phongxaly, Lao P.D.R. Tokyo: Institute for the Study of Languages and Cultures of Asia and Africa (ILCAA). Kato, Takashi. 2008. Linguistic Survey of Tibeto-Burman languages in Lao P.D.R. Tokyo: Institute for the Study of Languages and Cultures of Asia and Africa (ILCAA). Wright, Pamela Sue. n.d. Singsali (Phunoi) Speech Varieties Of Phongsali Province. m.s.