Chiari syndrome or Chiari's disease may refer to one of the following diseases named after the 19th century Austrian pathologist Hans Chiari:

• Arnold–Chiari malformation, or simply "Chiari malformation", a malformation of the brain
• Budd–Chiari syndrome, a disease with typical symptoms of abdominal pain, ascites and hepatomegaly caused by occlusion of the hepatic veins
• Chiari–Frommel syndrome, an older term for hyperprolactinaemia with extended postpartum galactorrhea and amenorrhea

This disambiguation page lists articles associated with the title Chiari syndrome.
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