Jean Newton McIlwraith (December 28, 1858 – November 17, 1938) was a Canadian novelist and biographer.

Her works include children's books, 1 opera, and historical romances, such as The Curious Career of Roderick Campbell (1901), A Diana of Quebec (1912), and Kinsmen at War (1927).

Her parents were Mary Park and Thomas McIlwraith, a noted ornithologist.

From 1902 to 1919 she worked in New York City for publishing companies and achieved the position of head reader at Doubleday, Page and Co.

[4] McIlwraith published one opera and several books in the genre of romance and historical fiction.