There are more native speakers of Sino-Tibetan languages than of any other language family in the world. Our records of these languages are among the oldest for any human language, and the amount of active research on them, both diachronic and synchronic, has multiplied in the last few decades. This volume includes overview articles as well as descriptions of individual languages and comments on the subgroups in which they occur. In addition to a number of modern languages, there are descriptions of several ancient languages.