Locus Award for Best Non-fiction
The Locus Award for Non-fiction is one of the annual Locus Awards presented by the science fiction and fantasy magazine Locus. Awards presented in a given year are for works published in the previous calendar year.
The Best non-fiction award has been made since 1979, originally known as Best Reference Book. The category was briefly merged with Best Art Book in 2004 and 2009-2010, and had on some occasions been previous won by graphic novels, which at the time did not have a category to fit them.