Andrew Ian Porter (born March 24, 1946) is an American editor, publisher and active science fiction fan.
Born Andrew Ian Silverberg on March 24, 1946, in Detroit, Michigan, he moved to New York City with his mother and brother in 1956 upon the death of his father the previous year.
He became active in fan groups including the Lunarians, FISTFA (the Fannish Insurgent, Scientifiction Association) and the Fanoclasts, then hosted by Ted White.
In 1960 he had his first news-related column on upcoming paperbacks, printed in James V. Taurasi's Science Fiction Times.
His other publications, under the Algol Press imprint, are Dreams Must Explain Themselves by Ursula K. Le Guin, Exploring Cordwainer Smith, Experiment Perilous: The Art and Science of Anguish In Science Fiction (with essays by Marion Zimmer Bradley, Alfred Bester and Norman Spinrad), and The Fiction of James Tiptree, Jr. by Gardner Dozois.