A stalker is someone who engages in stalking.

Stalker or S.T.A.L.K.E.R may also refer to:

• Aeros Stalker, a hang glider
• Lockheed Martin Skunk Works Stalker, an electrically powered UAV
• APAL Stalker, a Russian jeep-like SUV

• Stalker (Batman Beyond), a supervillain from the Batman Beyond animated series
• Stalker (comics), a character from a short-lived DC "sword and sorcery" comic
• Stalker (G.I. Joe), a fictional character in the G.I. Joe universe
• Stalker (Gundam), a character from the anime series Mobile Fighter G Gundam

• Stalker (film festival), a Russian film festival focused on human rights
• Stalker (1979 film), a Soviet science fiction art film directed by Andrei Tarkovsky
• Stalker (2010 film), a British psychological horror film directed by Martin Kemp
• Stalker (2012 film), an Irish psychological thriller directed by Mark O'Connor
• Stalker (2016 film), a Nigerian romantic drama film directed by Moses Inwang
• Stalker (2022 film), a British horror thrilled directed by Steve Johnson

• S.T.A.L.K.E.R., a first-person shooter franchise
  • S.T.A.L.K.E.R.: Shadow of Chernobyl, a first-person shooter loosely inspired by 1979 movie Stalker and the novel Roadside Picnic
  • S.T.A.L.K.E.R.: Clear Sky, a prequel to S.T.A.L.K.E.R.: Shadow of Chernobyl
  • S.T.A.L.K.E.R.: Call of Pripyat, a sequel to S.T.A.L.K.E.R.: Shadow of Chernobyl
  • S.T.A.L.K.E.R. 2, the sequel to S.T.A.L.K.E.R.: Shadow of Chernobyl

• Stalker (album), a 1995 dark ambient album by Lustmord & Robert Rich, inspired by the Tarkovsky film
• "Stalker", a song by Aphrodite from his album Aphrodite
• "Stalker", a song by Audiovent from their album Dirty Sexy Knights in Paris
• "Stalker", a song by Bruno Sutter from his album Bruno Sutter
• "Stalker", a song by Cascada from their album Original Me
• "Stalker", a song by Goldfinger from their album Disconnection Notice
• "Stalker", a song by Recoil from their album Unsound Methods
• "The Stalker", a song by the Insane Clown Posse from their EP Beverly Kills 50187

• Stalker, an alternative title for The Wish Machine, the screenplay for Tarkovsky's film Stalker
• Stalkers (comics), a 1990s comics limited series

• Stalker (TV series), a 2014 TV series starring Maggie Q and Dylan McDermott
• "Stalker" (CSI), an episode of the American television series CSI
• "Stalker" (The Walking Dead), 2020 television episode

• Stalker (surname), several people
• The Stalker, the ring name for professional wrestler Barry Windham

• Stalker (horse)

• Stalk (disambiguation)
• Deer stalking, a British term for the stealthy hunting of deer without hounds or horses
• Chernobyl stalking, making illegal visits to the Chernobyl nuclear disaster site
• Stalked: Murder in Slow Motion, a 2019 British crime documentary narrated by Kym Marsh