John de Courcy (disambiguation)
# John de Courcy (disambiguation)

John de Courcy (1160–1219), was a Norman English noble.

John de Courcy may also refer to:

* John de Courcy, one of several men with the title Baron Kingsale in the Peerage of Ireland
   * John Fitzroy de Courcy, 31st Baron Kingsale (1821–1890), colonel of the 16th Ohio Infantry
   * John de Courcy, 35th Baron Kingsale (1941–2005), the Premier Baron of Ireland
* John de Courcy Ireland (1911–2006), Irish historian and activist
* John Edmund de Courcy, English bishop in Ireland
