Adu () is an unclassified Loloish language of Huaning County, Yunnan, China.
Pelkey (2011:431) suggests that the neighboring Xiqi, Ati, and Long languages of Huaning County may be Southeastern Loloish languages. Hsiu (2018) also suggests a Southeastern Loloish affiliation.
The Huaning County Gazetteer Ã¥ÂÂå®Âå¿忠(1994:514) lists the following locations of Adu.
The Huaning County Ethnic Gazetteer (1992:72) provides a short word list of Adu, Ati, Xiqi, Nong, and Azhe transcribed using Chinese characters, shown below. Pinyin transliterations have also been provided below.