Jill Valentine is a character in Resident Evil, a survival horror video game series created by the Japanese company Capcom. She was introduced as one of the two player characters in the original Resident Evil (1996), alongside her partner Chris Redfield, as a member of the Raccoon City Police Department's Special Tactics And Rescue Service (S.T.A.R.S.) unit. Jill and Chris fight against the Umbrella Corporation, a pharmaceutical company whose bioterrorism creates zombies and other bio-organic weapons, and later become founding members of the United Nations' Bioterrorism Security Assessment Alliance (BSAA).

Resident Evil, or Biohazard in Japan and parts of Southeast Asia, is a Japanese horror game series and media franchise created by Capcom. It consists of survival horror, third-person shooter and first-person shooter games, with players typically surviving in environments inhabited by zombies and other frightening creatures. The franchise has expanded into other media, including a live-action film series, animated films, television series, comic books, novels, audio dramas and merchandise. Resident Evil is the highest-grossing horror franchise.