Limbu is a Tibeto-Burman language spoken in Nepal,Bhutan, Sikkim, Kashmir and Darjeeling district, West Bengal, India, by the Limbu community. Virtually all Limbus are bilingual in Nepali.

The name Limbu is an exonym of uncertain origin. Limbus refer to themselves as yakthungba, and their language as Yakthung Pan. It has four main dialects; Panthare, Phedape, Chatthare and Tambar Khole. Panthare dialect is the standard dialect of the Limbu language, whereas Phedape is spoken and understood by most.

Limbu language has its own unique evolution of Tibetan and Devanagiri writing system. Far more Limbus are literate in Nepali than in Limbu, thus many Limbu publications are accompanied by Nepali translation.

Limbu language is one of the major spoken and written languages of Nepal, Sikkim and other parts of Northern India. Today, linguists have reached the conclusion that pronominalization is indigenous development of Tibeto-Burman language and Limbu language bears close resemblance with Khambu Sampang and unique Tibetan dialects. Limbu language has four main dialects-Panchthare, Tamarkhole, Phedape and Chatthare.