A proto-language is a hypothetical or reconstructed language from which a number of known languages are believed to have descended in historical linguistics.
Proto-language may also refer to: Proto-language (glottogony), primitive language-like systems or forms of communication posited in theories of the origin of language Proto-human language, a hypothetical ancestor of all the world's languages Musical protolanguage, a theory of the origins of music and vocal communication
See also :Category:Proto-languages