John Kaldor (disambiguation)
# John Kaldor (disambiguation)

John Kaldor (born 1936) is an Australian art collector and philanthropist.

John Kaldor or Calder may also refer to:

* John Kaldor, a character in the 1996 novel Awake and Dreaming by Kit Pearson
* John Calder (1927–2018), Canadian and Scottish publisher
* John Calder (cricketer) (1951–2010), New Zealand cricketer
* John Calder (minister) (1733–1815), Scottish dissenting minister and author
