Robert Duncan Milne (7 June 1844–15 December 1899) was a late-19th century San Francisco science fiction writer whose work was published primarily in newspapers of the time, and the magazine The Argonaut.

He was born in Cupar, Scotland, and moved to San Francisco in the 1860s, where he remained until his death.

Despite his forward-thinking themes, much of his work remained obscure and was unavailable for long after his death.

[2] Milne was rediscovered by science fiction historian Sam Moskowitz, who collected some of his work in the 1980 volume Into the Sun & Other Stories.

Edited by Dr. Keith Williams and Ari Brin, the anthology reflects eight years of archival research and renewed interest into Milne’s contributions to the early development of science fiction.