Johnny is a disambiguation. It may refer to:
Characters
- Johnny Elaine - A realistic fish head seen in the "SpongeBob SquarePants Theme Song" and occasionally in some episodes.
- Big Johnny - One of Billy's friends in the episode "Friend or Foe."
- Johnny Krill - A krill who appears in the episode "Extreme Spots."
People
- Johnny Depp - An actor, producer, and musician who voices Jack Kahuna Laguna.
- Johnny Knoxville - An actor who voices Johnny Krill.