JW may refer to:
- Jack Wills, a British clothing brand
- Jehovah's Witnesses, a Christian denomination
- John Wick, an action film franchise (since 2014) starring Keanu Reeves
- Joko Widodo, 7th president of Indonesia, 16th governor of Jakarta, and 15th mayor of Surakarta
- Juice WRLD (1998–2019), an American rapper and singer
- Jurassic World, 2015 adventure film by Colin Trevorrow
- Jurassic World (franchise), the Jurassic World franchise originating with the 2015 film
- JW, a patient with a "split brain"
- JW, a catalogue of works by Leoš Janáček
- The Jewish War, a c. AD 75 history book by Josephus
- Vanilla Air (2013-2019, IATA code JW), a Japanese airline
- Arrow Air (1947–2010), an American cargo airline
- JW (Hong Kong singer), a Hong Kong singer and actress
- ⟨jʷ⟩, IPA for a voiced labial–palatal approximant