The Waic languages are spoken in Shan State, Burma, in Northern Thailand and in Yunnan province, China.
Gérard Diffloth reconstructed Proto-Waic in a 1980 paper. His classification is as follows (Sidwell 2009). (Note: Individual languages are highlighted in italics.)
- Samtau (later renamed "Blang" by Diffloth)
The recently discovered Meung Yum and Savaiq languages of Shan State, Burma also belong to the Wa language cluster.