Meithei (also Manipuri, Meetei, Meitei, Meiteilon) is the predominant language and lingua-franca in the state of Manipur, in northeastern India. It is the official language in government offices. Meithei is also spoken in Assam, Bangladesh, Tripura, and Myanmar Meithei has proven to be a large integrating factor among all ethnic groups in Manipur who use it to communicate among themselves.

Meithei has been recognized as the Manipuri language by the Indian Union and has been included in the list of scheduled languages (included in the 8th schedule by the 71st amendment of the constitution in 1992). Meithei is taught as a subject up to the Post-graduate level (Ph.D.) in Universities of India, apart from being a medium of instruction up to the undergraduate level in Manipur. Meithei should not be confused with the Indo-Aryan language called Bishnupriya Manipuri that was spoken in Manipur between the 13th and 19th centuries.