Henry Keazor (born 4 March 1965) is a German art historian. He is a professor of art history at Heidelberg University.
 Keazor studied art history, German literature, musicology and philosophy at the Heidelberg University and at the Sorbonne in Paris. In 1996 obtained his doctoral title with a Ph.D. dissertation on the French Baroque painter Nicolas Poussin. From 1996 to 1999, he was first fellow and then Scientific Assistant at the Istituto Germanico/Kunsthistorisches Institut in Florence. Afterwards, from 1999 to 2005, he was assistant professor at the Kunstgeschichtliches Institut of the Goethe University Frankfurt, where he did his habilitation in 2005 with a research thesis on the pictorial reform of the Early modern painter’s family of the Carracci from Bologna. Directly afterwards Keazor became guest professor at the Johannes Gutenberg University of Mainz before he then, from 2006 on, got the Heisenberg-fellowship of the German Research Foundation (Deutsche Forschungsgemeinschaft: DFG). Eventually, in September 2008, he was appointed Chair of Art History at Saarland University.
 In September 2012, Keazor changed to the Institut für Europäische Kunstgeschichte of the Heidelberg University where he assumed the succession of Raphael Rosenberg, whose post, the professorship of early modern and contemporary art history, had been vacant since 2009. At the same time, he also began to in the executive board of the Arts Council of Heidelberg (Heidelberger Kunstverein). Since 2015, he is a full member of the Heidelberg Academy of Sciences (Heidelberger Akademie der Wissenschaften).
 In 2020 Keazor – among other for his publications on Nicolas Poussin and Jean Nouvel – was awarded with the "Prix du Rayonnement de la langue et de la littérature françaises" of the Académie française, which is given to French and foreign personalities for outstanding services to the French language and literature.
 Keazor’s research focuses on French and Italian Baroque Art as well as on Early Modern illustrations of the discovery of America (and here especially those published by the Belgian artist Theodor de Bry), modernist and contemporary architecture (here especially the architectural language of Jean Nouvel), the impact and reception of visual art in literature and media (such as for example in the TV-series The Simpsons), music videos, the image of the astronaut in arts and media and art forgery. In the context of the latter topic, he appears at the beginning and the end of Arne Birkenstock’s documentary “Beltracchi: The Art of Forgery” from 2014 as the interview partner of art forger Wolfgang Beltracchi. Hereby he is able to coax the statement out of Beltracchi that according to himself there is no “lifeblood” invested and infused into his forgeries. This seems to stand in conflict with an earlier statement of Beltracchi who, during his trial, had emphasized that he had only been interested in painting, not in money. In 2015, Keazor also curated the exhibition “Fake: Forgeries by the Book” (Fake: Fälschungen, wie sie im Buche stehen) in the Heidelberg University Library where, for the first time, a fake Beltracchi’s after Johannes Molzahn was directly confronted to an original by Molzahn, thus giving the audience a chance to compare the artistic quality of both works. In Spring 2021, he founded the first university forgery archive dedicated to teaching and research at the Institute for European Art History at the University of Heidelberg under the acronym HeFäStuS (= HEidelberger FÄlschungs-STUdien-Sammlung). With the collection, named after the god for fire and crafts Hephaistos (Latin Hephaestus), art forgeries provided by the State Criminal Police Offices Berlin, München and Stuttgart from their evidence rooms are available for teaching. The goal is not only to sensitize students to forgeries they may encounter later in their careers, but also to use these objects, which (unlike works kept in museums) allow direct examination, to convey much of what is also relevant to art sold as originals (style, painting technique, provenance, etc.).