Lao Nyo or Nyo (autonym: laːw˧ɲɔːʔ˦) is a Southwestern Tai language spoken mostly in Banteay Meanchey Province, Cambodia, as well as in Aranyaprathet District, Sa Kaew Province, Thailand.

[2] Lao Nyo is classified as a dialect of Lao rather than Nyo (Nyaw), based on linguistic data from Aun Loung Svay Chas village in Cambodia.

[1] This exonym may have been used due to the Lao Nyo's geographical origins or their language.

Nyo is a Southwestern Tai language spoken in Tha Uthen District, Nakhon Phanom Province and Kantharawichai District, Maha Sarakham Province of Thailand, as well as Khamkeut District, Bolikhamxay Province of Laos.

[1] In Sa Kaew Province, Thailand, the Lao Nyo are found in the following subdistricts (tambon) of Aranyaprathet District.