James Alexander Macdonald was a Canadian newspaper editor, minister, educator and author.
He was born in East Williams Township, Upper Canada, the son of John Alexander Macdonald and Jane Grant, and was educated there, in Hamilton, in Toronto and at the University of Toronto. Macdonald continued his studied at Knox College, where he became editor of the Knox College Monthly. After graduating in 1887, he continued to be editor and also served as college librarian. In 1890, Macdonald married Grace Lumsden Christian. He was ordained a Presbyterian minister in 1891 and assigned to Knox Presbyterian Church in St. Thomas. In 1896, Macdonald was named principal of Presbyterian Ladies' College in Toronto. He also became editor of a new Presbyterian monthly, the Westminster. In 1902, Macdonald also became editor of a new weekly Presbyterian. In 1903, he became editor of the Globe, continuing in that role until 1915. Macdonald also served as a director of the Canadian Associated Press and for the University of Toronto, as a trustee for the Toronto General Hospital.