The Atlantic or West Atlantic languages of West Africa are an obsolete proposed major group of the Niger–Congo languages. They are those languages west of Kru which have the noun-class systems characteristic of the Niger–Congo family; in this they are distinguished from their Mande neighbors, which do not. The Atlantic languages are highly diverse and it is now generally accepted that they do not form a valid group. Linguists such as Dimmendahl, Blench, Hyman, and Segerer classify them into three or more independent branches of Niger–Congo. The term 'Atlantic languages' is kept as a geographic term of convenience.

The Atlantic languages are spoken along the Atlantic coast from Senegal to Liberia, though transhumant Fula speakers have spread eastward and are found in large numbers across the Sahel, from Senegal to Nigeria, Cameroon and Sudan. Wolof of Senegal and several of the Fula languages are the most populous Atlantic languages, with several million speakers each; other significant members include Serer and the Jola dialect cluster of Senegal and Temne in Sierra Leone. The Senegambian languages exhibit consonant mutation, and most Atlantic languages have noun-class systems similar to those of the distantly related Bantu languages. Some languages are tonal, while others such as Wolof have pitch-accent systems. The basic word order tends to be SVO.