Algo was a science fiction fanzine by Andrew Porter.
Released in New York, U.S.A. in the 1970s, Algol was a long running fanzine.
Contributing writers included Brian W. Aldiss, Poul Anderson, Gregory benford, Anne McCaffrey, A, Bertrum Chandler, Philip K. Dick, Vincent DiFate, Harlan Ellison (Science Fantasy Bulletin), Walter Gillings, Ursula LeGuin, Richard Lupoff (Xero), Frederick Pohl (The International Observer of Science and Science Fiction), Ted White (Void), Jack Williamson, Susan Wood (Aspidistra)
Contributing artists included Terry Austin, Rick Bryant, Grant Canfield, Derek Carter, Ross Chamberlain, Cecilia Cosentini, Kelly Freas, Jack Gaughan, C. Lee Healy, Alan Hunter, Jim McLeod, Lydia Moon, Mike Streff, Bill Rotsler, Arthur Thomson (The ATom Anthology), Judith Weiss,
Algol also featured interviews with writers such as Suzy McKee Charnas, Samuel R. Delany, Gordon R. Dickson, Ursula K. LeGuin, Fritz Leiber, and Michael Moorcock.
Algo won the Hugo Award for Best Fanzine in 1974.