Lam Wa

The Lam Wa (ลำว้า, ) is a watercourse of the Thai highlands in Thailand, and a tributary of the Nan River, part of the Chao Phraya River basin. It has its source beneath the 1745 m high Doi Phi Pan Nam mountain of the Luang Prabang Range. It joins the Nan River near Wiang Sa town in Wiang Sa District, Nan Province.

The Lam Wa is a popular watercourse for white water rafting.