A Fire Upon the Deep is a 1992 science fiction novel by American writer Vernor Vinge. It is a space opera involving superhuman intelligences, aliens, variable physics, space battles, love, betrayal, genocide, and a communication medium resembling Usenet. A Fire Upon the Deep won the Hugo Award in 1993, sharing it with Doomsday Book by Connie Willis.

Vernor Steffen Vinge was an American science fiction author and professor. He taught mathematics and computer science at San Diego State University. He was the first wide-scale popularizer of the technological singularity concept and among the first authors to present a fictional "cyberspace". He won the Hugo Award for his novels A Fire Upon the Deep (1992), A Deepness in the Sky (1999), and Rainbows End (2006), and novellas Fast Times at Fairmont High (2001) and The Cookie Monster (2004).