Laghuu (Vietnamese: Xá Phó, Phù Lá Lão) is a Loloish language spoken in northwestern Vietnam. In Nậm Sài, Sa Pa Town, the speakers' autonym is la21 ɣɯ44, while in Sơn La Province it is la21 ɔ44 (Edmondson 1999). The people are also called the Phù Lá Lão by the Vietnamese.
Edmondson considers Laghuu to be related to but not part of the Yi language complex of China. Jamin Pelkey (2011) considers Laghuu to be a Southeastern Loloish language.
Laghuu is spoken in the following locations by a total of about 1,000 people (Edmondson 1999 & 2002).
The Vietnam, Laghuu speakers are officially classified as part of the Phù Lá ethnic group. Some Laghuu are known as "Black Phu La," and others as "Flowery Phu La."
Laghuu has the following consonants.
Laghuu has the following vowels.
Laghu has five tones: high /˥/, high-mid /˦/, low-mid /˧/, low-rising /˨˦/, and low-falling /˨˩/.