The phonology of several Kuki-Chin (South Central Trans-Himalayan) languages have been described well, and there are fragmentary sketches of numerous others. Extensive diachronic work has also been done for the languages of this group. However, there is no comprehensive survey of the synchronic phonologies of Kuki-Chin languages. This chapter attempts to fill that gap so that researchers working on one of these languages, or doing broader typological surveys, can easily grasp the broad sound patterns in, and phonological questions raised by, Kuki-Chin. The chapter covers syllable structure, onsets, rhymes, and morphophonology. Onsets and rhymes are illustrated with complete inventories for Proto-Kuki-Chin and six attested Kuki-Chin languages from various subgroups (Falam, Mara, Thado, Daai, Lemi, Sorbung, and Monsang) and a comparative perspective on each of these inventories. This is followed by a discussion of the broader issues in Kuki-Chin sound inventories and phonotactics. These issues include laryngeal contrasts in obstruents and sonorants, the special status of glottal stop, and vowel length distinctions. A range of morphophonological alternations are then addressed, including the widespread phenomenon of non-final shortening (illustrated with observations from Thado, Daai, Sorbung, Falam, and Zophei) and vowel harmony (attested in at least Lamkang and Hyow). Apophony in stem form alterations and transitivity alternations is also discussed, drawing largely on data from Hakha Lai.