Alexander Keiller

Alexander Keiller or Keillor may refer to:


 * Alexander Keiller (archaeologist) (1899–1955), Scottish archaeologist who worked at Avebury
 * Alexander Keiller Museum, Avebury
 * Alexander Keiller (businessman) (1804–1874), Scottish businessman who founded the Swedish company Göteborgs Mekaniska Verkstad
 * Alexander Keiller (physician) (1811–1892), Scottish physician and obstetrician
 * Alex Keillor (1869–1960), Scottish footballer