Mark Cleland Baker (born 1959) is an American linguist. He received his Ph.D. from MIT in 1985 and has taught at Rutgers University since 1998. Baker frequently was a faculty member at the Linguistic Society of America's Summer Institute and, prior to coming to Rutgers, was a faculty member at McGill University (1986–1998). He worked with the Mohawk language for several years, also serving as a consultant on language revitalization for the Mohawk. Working within generative grammar, he has written several books about the formal analysis of polysynthetic languages.

• Incorporation: A theory of grammatical function changing (University of Chicago Press, 1988) ISBN 0226035417^[1]
• The Polysynthesis Parameter (Oxford University Press, 1996)
• The Atoms of Language (Basic Books, 2001)
• Lexical Categories: Verbs, Nouns and Adjectives (Cambridge University Press, 2002)
• The Syntax of Agreement and Concord (Cambridge University Press, 2008)
• The Soul Hypothesis: Investigations into the Existence of the Soul (Continuum, 2011) – editor (with Stewart Goetz) and contributor