Jennifer or Jenifer may refer to:
- Jennifer (given name)
- Project Jennifer, a CIA attempt to recover a Russian submarine in 1974
In film and television:
- Jennifer (film), a 1978 horror film by Brice Mack
- Jennifer (1953 film), a film starring Ida Lupino
- Jennifer (2009 film), a film by Stewart Copeland aired on the American TV program P.O.V.
- Jennifer's Body, a film starring Megan Fox
- Jenifer (2001 film), an American TV film starring Jane Alexander
- "Jenifer" (Masters of Horror), an episode of Masters of Horror
In music:
- The Jennifers, a British band, some of whose members later formed Supergrass
- Jenifer Bartoli or simply Jenifer, French pop singer
- Jenifer (album), an album by Jenifer
- Jennifer Warnes, American singer who formerly used the stage name Jennifer, also the title of her 1972 album
- "Jennifer", a 1974 song by Faust from Faust IV
- "Jennifer", a 1983 song by Eurythmics from Sweet Dreams (Are Made of This)
- "Jennifer", a 2001 song by M2M from The Big Room