Lawu (autonym:la21wu21)^[2] is a highly endangered unclassifiedLoloish language ofYunnan, China. It has about 50 elderly speakers in Jiuha village 旧哈村,^[3] Shuitang district 水塘镇,Xinping County, Yuxi Prefecture,Yunnan Province. There are possibly also some speakers in Jiujia District 九甲乡,Zhenyuan County,Pu'er Prefecture, Yunnan Province.^[2] Lawu speakers are currently classified by the Chinese government asLahu, but were formerly classified asYi.

Cathryn Yang (2012)^[4] suggests that Lawu is most likely aCentral Ngwi language, but notes that it does not classify with Lalo, Lahu, or the Lisoid (Lisu, Lipo, Lolopo) languages.

Andrew Hsiu (2017)^[5] suggests that Lawu is related toAwu of Xiaopingzi 小坪子, Daping Township 大坪乡,Yuanyang County, Yunnan, China,^[6] which is documented in Lu & Lu (2011).^[7] Together, Lawu and Awu form aLawu orLawoish language branch. The linguistic evidence suggests that the ancestors of the Awu had migrated down theRed River valley from further up northwest, and arrived at their present location after migrating downstream.

Lewu, which is currently extinct, may have been related to Lawu, but classification is uncertain due to the paucity of data.

• /n/ is pronounced [ɲ] before the vowels /i e/.

• /i/ is realised as anapical vowel [z̩] after the alveolar affricates and fricatives /tsʰ ts s z/.

Additionally, the following diphthongs have been observed: /ue/, /ie/, /au/, /ai/, /ua/.

Lawu also has fourtones;^[4] high, mid, low, and falling.

• Hsiu, Andrew. 2017.The Lawu languages: footprints along the Red River valley corridor.

• Loloish languages
• Languages of Yunnan
• Endangered Sino-Tibetan languages

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