Deadlock commonly refers to:

• Deadlock (locksmithing) or deadbolt, a physical door locking mechanism
• Deadlock (computer science), a situation where two processes are each waiting for the other to finish
• Political deadlock or gridlock, a situation of difficulty passing laws that satisfy the needs of the people
• Negotiation deadlock or an impasse, a situation where two sides bargaining can't reach an agreement

Deadlock or deadlocked may also refer to:

• Deadlock (novel), a detective novel by Sara Paretsky
• Deadlocked (novel), a Sookie Stackhouse novel by Charlaine Harris
• Deadlock, a character in ABC Warriors

• Deadlock (1931 film), a British crime film featuring Stewart Rome, Marjorie Hume and Warwick Ward
• Deadlock (1943 film), a British crime film starring John Slater
• Deadlock (1970 film), a West German Western starring Mario Adorf
• Deadlock (2021 film), an American action thriller starring Bruce Willis

• The Bold Ones: The Protectors, also known as Deadlock, a 1969–1970 American crime drama television series
• "Deadlock" (Battlestar Galactica), an episode of Battlestar Galactica
• "Deadlock" (Star Trek: Voyager), an episode of Star Trek: Voyager
• Deadlock (TV series), a 2018 Australian TV series starring Thomas Weatherall

• "Deadlock", a 1970 song by Can from track from Soundtracks
• "Deadlock", a 1998 song by Front Line Assembly from Cryogenic Studios Compilation
• Deadlock (band), a German melodic death metal band
• Deadlock (EP), a 2023 EP by South Korean rock band Xdinary Heroes

• Battlestar Galactica Deadlock, a 2017 turn-based strategy game
• Deadlock, a playable character in Valorant
• Deadlock (video game), an upcoming game by Valve
• Deadlock: Planetary Conquest, a computer game by Accolade
• Ratchet: Deadlocked, a game in the Ratchet & Clank series by Insomniac Games
• Deadlocked, a level in Geometry Dash.

• Deadlocked jury or hung jury, one that cannot agree upon a verdict
• Deadlock (game theory), a type of game in game theory, where the action that is mutually most beneficial is also dominant

• Deadloch, an eight-part 2023 Australian comedy television series
• Deathlock (disambiguation)
• Dreadlock
• Impasse