Ian Duncan McKinnon CNZM QSO JP (born 21 April 1943) is a New Zealand educator and local politician, and is a former deputy mayor of Wellington.

At Wanganui Collegiate, he steered the school through a period of sustained pupil growth, despite the fall-off of its traditional catchment area – the education of central North Island farmer's sons, in the wake of the removal of state produce subsidies.

[3] He retired from the city council at the 2013 local government elections, and was succeeded by Justin Lester as Deputy Mayor.

[4] In 2019 McKinnon announced that he would not be standing for re-election to the Wellington Regional Council, on which he has been a councillor since 2016.

[6] In the 2013 Queen's Birthday Honours, McKinnon was appointed a Companion of the New Zealand Order of Merit, for services to education and the community.