| death_date =
| death_place = Austin, Texas, U.S.
| pseudonym = Joan Hadley
| occupation = Writer
| genre = Mystery fiction
| awards =
}}
Joan Hess (January 6, 1949 – November 23, 2017) was an American mystery writer, a member of Sisters in Crime, and a former president of the American Crime Writers League. She wrote two popular mystery series: ''The Claire Malloy Mysteries'' and ''The Maggody Mysteries'' (also called ''The Arly Hanks Mysteries''), and contributed to multiple anthologies and book series, including: Crosswinds, Deadly Allies, Malice Domestic, Sisters in Crime, and The Year's 25 Finest Crime and Mystery Stories. She also wrote the Theo Bloomer mystery series, under the pseudonym Joan Hadley.
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