title: Demijohn (disambiguation)
text: # Demijohn (disambiguation)
  
  A demijohn is a container for fluids used in brewing.
  
  Demijohn may also refer to:
  
  * Thom Demijohn, a joint pseudonym used by authors Thomas M. Disch and John Sladek for their satirical novel Black Alice
  * Demijohn Lake (Ontario), a lake in Thunder Bay District, Ontario, Canada
  