Yellowjacket may refer to:
- Yellowjacket (Marvel Comics):
- Hank Pym (also known as Ant-Man, Giant-Man and Goliath), a founding member of the Avengers.
- Yellowjacket (Rita DeMara), who began as a supervillain but later became a superhero. She has been a member of the Masters of Evil and the Guardians of the Galaxy.
- Yellowjacket (Charlton Comics), a superhero who gains the ability to control yellowjackets after jewel thieves pour a box of them on him.