A Grammar of Prinmi represents the first in-depth description of a Tibeto-Burman language spoken by the Pǔmǐ Nationality and the Zàng Nationality (in Mùlǐ, Sichuan) in southwest China. Prinmi belongs to the Qiangic branch and is closely related to the extinct language of Tangut. This grammar studies the phonology (both segmental and suprasegmental), morphology, syntax and information structure of Prinmi, with two sample texts and an English-Prinmi glossary provided in appendices. Some noteworthy features of Prinmi include a wealth of clitics (appearing as proclitic, enclitic, mesoclitic or endoclitic), a lexical tone system akin to Japanese, and a collection of existential verbs that discriminate concreteness, animacy, and location