I want to thank Robert Magill for reading the manuscript and for his comments on the overall format of this checklist, Marshall Crosby for providing nomenclatural information pertinent to Asian mosses, and Bruce Allen for his helpful discussions on numerous identifications. I am grateful to Ch. Charoenphol, K. Larsen, I. Nielsen, T. Santisuk, T. Smitinand, A. Touw, and E. Warncke who have collected specimens of mosses from Thailand and provided them to the Missouri Botanical Garden herbarium (MO), making this study possible.