Douglas Kerr MacDiarmid (14 November 1922 – 26 August 2020) was a New Zealand expatriate painter, known for his diversity and exceptional use of colour, and involved with key movements in twentieth-century art.

While his brother Ronald Diarmid MacDiarmid (1920–2013) followed in his father's footsteps, becoming a doctor, Douglas left New Zealand after the war in 1946 to find his way as an artist, teaching and painting in London and France.

Not confined to a style, he created landscapes, cityscapes, portraits, figures, abstract and semi-abstract forms, many inspired by his extensive travels, and exhibited successfully in France, London, Athens, New York, and Casablanca.

In 2016, two of his paintings sold through Art+Object for a record price (for the artist) of more than $27,000 each as part of the Tim and Sherrah Francis Collection, the highest grossing art auction in New Zealand history.

[11] Published by the Alexander Turnbull Library, the signed, limited edition book was titled In the mirror, and dancing (2017) and hand-pressed by Brendan O'Brien.