The Central MP languages (red). (In black is the Wallace Line.) In Grimes & Edwards' conception, more of the Bomerai Peninsula to the northeast is included.
The Central Malayo-Polynesian languages (CMP) are a proposed branch in the Malayo-Polynesian subgroup of the Austronesian language family. The languages are spoken in the Lesser Sunda and Maluku Islands of the Banda Sea, in an area corresponding closely to the Indonesian provinces of East Nusa Tenggara and Maluku and the nation of East Timor (excepting the Papuan languages of Timor and nearby islands), but with the Bima language extending to the eastern half of Sumbawa Island in the province of West Nusa Tenggara and the Sula languages of the Sula archipelago in the southwest corner of the province of North Maluku. The principal islands in this region are Sumbawa, Sumba, Flores, Timor, Buru, and Seram. The numerically most important languages are Bima, Manggarai of western Flores, Uab Meto of West Timor, and Tetum, the national language of East Timor.
Blust proposes that the CMP languages form a linkage, which means that the CMP languages share a common ancestor and many overlapping innovations, none of which however are found in all CMP languages.
Based on the Glottolog, CMP can be provisionally divided into the following subgroups:
Edwards & Grimes (2021) find that the similarities between the demonstrable groups of CMP languages are due to Papuan substrates and contact. They propose the following groups of languages in the area as primary branches of Austronesian. Several of these groups have been previously proposed, including by Blust:
Seram Laut, apart from Kowiai, was first proposed by Collins (1986). It's distinguished from Ambon–Seram to the west in its reflexes of *j, *R, *-aw, and from Tanimbar–Bomberai to the east in *j and *z, but is only weakly defined as a unit. Its three branches are however well defined.
Edwards & Grimes (2021) further propose that the Taliabo languages, generally held to be part of Central Maluku, are actually Celebic (specifically, Saluan–Banggai).