Winners of the Hugo Award for best science fiction or fantasy novel, along with all the nominees, are presented here. Awards given in one year are for works published during the previous calendar year. A novel is considered to be 40,000 words or longer. A Hugo for Best Novel was first awarded in 1953, following in subsequent years starting from 1955 although no awards for specific fiction pieces were given out in 1957.
Additional Hugo Awards for fiction are given for pieces of shorter lengths in the short story, novelette and novella categories.
Retro Hugos were awarded 50 years after years in which World Conventions didn't give awards — note: no "Best Novel" Hugo was awarded at the 1957 convention, but Hugos were awarded in other categories, hence there was no "Retro Hugo" for 1957 awarded in 2007.