Mono is a Banda language spoken in the northwestern corner of the Democratic Republic of Congo (DRC). It is part of the larger Adamawa-Ubangi language family. The following description is based on the variety of the language spoken in Bili, Bosobolo Zone, DRC. Mono speakers consider this to be the most prestigious variety of the language. The sound inventory is relatively homogenous in Bili and the surrounding area. The orthography given here was approved by the Mono volunteer language development committee in 1994. Previous studies of Mono include Olson & Schrag (2000), Olson (2001) and Kamanda-Kola (2003).