Alum is a species and class of chemical compound. Potassium alum, the prototypical member of the class, is often referred to simply as alum.

Alum may also refer to:

  • Alum, Texas, a community in the US
  • Alumnus, a graduate of a particular institution
  • Alum Pot, a pothole in Simon Fell, North Yorkshire, England
  • Ålum Runestones, four Viking age runestones located in Ålum, Denmark
  • Robert Alum (died 1417), an English medieval bishop and university chancellor

See also

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