Géraud Sénizergues (born 9 March 1957) is a French computer scientist at the University of Bordeaux. He is known for his contributions to automata theory, combinatorial group theory and abstract rewriting systems. He received his Ph.D. (Doctorat d'état en Informatique) from the Université Paris Diderot (Paris 7) in 1987 under the direction of . With Yuri Matiyasevich he obtained results about the Post correspondence problem. He won the 2002 Gödel Prize "for proving that equivalence of deterministic pushdown automata is decidable". In 2003 he was awarded with the Gay-Lussac Humboldt Prize.