The Tai Lü people (Tai Lue: ᦺᦑᦟᦹᧉ, Chinese: 傣仂, Dǎi lè, Lao: ລື້, Lư̄, Thai: ไทลื้อ, RTGS: Thai Lue, Vietnamese: Người Lự) are an ethnic group of China, Laos, Thailand, Burma and Vietnam.

In Vietnam, most Lu live in Lai Châu Province and their population was 5,601 in 2009.

In China, they are officially recognized as part of the Dai ethnic group.

The 2000 census counted about 280,000 Dai people speaking Lü language.

They had built Tam Vạn wall in Mường Thanh and managed there for 19 generations before Hoàng Công Chất, a Thái leader, came.