El Premio Hugo al mejor libro de no ficción puede ser otorgado a una obra relacionada con la ciencia ficción, la fantasía o el fandom, siempre que no reúna los requisitos para ninguna de las categorías de ficción. Entre el tipo de obras elegibles se hallan los cómics y novelas gráficas, recopilaciones artísticas, trabajos de crítica literaria, libros sobre la realización de películas o series de televisión, biografías, etc.

Ganadores

2009 - Your Hate Mail Will Be Graded: A Decade of Whatever, 1998-2008, John Scalzi

2008 - Brave New Words: The Oxford Dictionary of Science Fiction, Jeff Prucher

2007 - Alice B. Sheldon: la doble vida de James Tiptree, Jr. (James Tiptree, Jr.: The Double Life of Alice B Sheldon), Julie Phillips

2006 - Storyteller: Writing Lessons and More from 27 Years of the Clarion Writers’ Workshop, Kate Wilhelm

2005 - The Cambridge Companion to Science Fiction, Edward James y Farah Mendleshon (eds.)

2004 - The Chesley Awards for Science Fiction and Fantasy Art, John Grant, Elizabeth L. Humphrey y Pamela D. Scoville (eds.)

2003 - Better to Have Loved: The Life of Judith Merril, Judith Merril y Emily Pohl-Weary

2002 - The Art of Chesley Bonestell, Ron Miller y Frederick C. Durant III

2001 - Greetings from Earth: The Art of Bob Eggleton, Bob Eggleton y Nigel Suckling

2000 - Science Fiction of the 20th Century, Frank M. Robinson

1999 - The Dreams Our Stuff is Made Of, Thomas M. Disch

1998 - The Encyclopedia of Fantasy, John Clute y John Grant

1997 - Time & Chance: , L. Sprague de Camp

1996 - Science Fiction: The Illustrated Encyclopedia, John Clute

1995 - Memorias: autobiografía (I. Asimov: A Memoir), Isaac Asimov

1994 - The Encyclopedia of Science Fiction, John Clute y Peter Nicholls

1993 - A Wealth of Fable, Harry Warner, Jr.

1992 - The World of Charles Addams, Charles Addams

1991 - How to Write Science Fiction and Fantasy, Orson Scott Card

1990 - The World Beyond the Hill, Alexei Panshin y Cory Panshin

1989 - The Motion of Light in Water: Sex and Science Fiction Writing in the East Village, Samuel R. Delany

1988 - Michael Whelan’s Works of Wonder, Michael Whelan

1987 - Trillion Year Spree, Brian W. Aldiss y David Wingrove

1986 - Science Made Stupid, Tom Weller

1985 - Wonder’s Child: My Life in Science Fiction, Jack Williamson

1984 - The Encyclopedia of Science Fiction and Fantasy through 1968, Vol 3: Miscellaneous, Donal H. Tuck

1983 - Isaac Asimov: The Foundations of Science Fiction, James E. Gunn

1982 - Danza macabra (Danse Macabre), Stephen King

1981 - Cosmos, Carl Sagan

1980 - The Science Fiction Encyclopedia, Peter Nicholls