Alum is a type of chemical compound, and alum may refer to several related salts.

Alum may also refer to:

Alum, Texas, a ghost town in the US Ålum, a settlement in the municipality of Randers, Denmark Robert Hallam or Alum (died 1417), English bishop and university chancellor

See also

Alumni, singular alumnus (), alumna (), former students or graduates of a school, college, or university Alum Bay, Isle of Wight, England Alum Creek (disambiguation) Alum Pot, a pothole in Simon Fell, North Yorkshire, England Alum Rock (disambiguation) Ålum Runestones, four Viking age runestones in Ålum, Denmark Alum Springs (disambiguation) Allum, a surname Allums, a surname Aluminium (disambiguation) Alumina, or aluminium oxide