Callendar
# Callendar

Callendar is a title of Scottish nobility and a surname. It may refer to:

* Earl of Callendar
   * Callendar House, Falkirk
* Guy Stewart Callendar (1898 – 1964), English steam engineer and inventor and son of Hugh Longbourne Callendar
   * Callendar effect
* Hugh Longbourne Callendar (1863 – 1930), British physicist and father of Guy Stewart Callendar
