Donald MacDonald Kingsbury (born 12 February 1929, in San Francisco) is an American–Canadian science fiction author. Kingsbury taught mathematics at McGill University, Montreal, from 1956 until his retirement in 1986.
The Finger Pointing Solward has been awaited ever since the publication of Courtship Rite. Kingsbury has never finished the story, noting as far back as September 1982 that he was still "polishing" it (see interview with Robert J. Sawyer) and as recently as his self-supplied Readercon biography in July 2006. Artist Donato Giancola placed a copy of the intended cover on his gallery page: this cover was used in 2016 for the Bradley P. Beaulieu collection In the Stars I'll Find You. In 1994, an excerpt was published as "The Cauldron".