| Honorific-Prefix: | The Honourable |
| John Edward Duncan | |
| Honorific-Suffix: | MLC |
| Order: | Member of the Legislative Council |
| Term Start: | 22 September 1937 |
| Term End: | 31 December 1950 |
| Birth Date: | 1884 |
| Birth Place: | Auckland, New Zealand |
| Death Date: | 1959 |
| Death Place: | New Zealand |
| Party: | Labour Party |
John Edward Duncan (1884–1959) was a member of the New Zealand Legislative Council from 22 September 1937 to 21 September 1944; then 22 September 1944 to 31 December 1950 when the Council was abolished. He was appointed by the First Labour Government.[1]
He was from Auckland then Wharepuhunga.