Cloak and Dagger are a pair of fictional characters, both teenage comic book superheroes, in the Marvel Comics universe.

Tyrone 'Ty' Johnson (Cloak) and Tandy Bowen (Dagger) met in New York City as runaways. Tyrone was an African American teenager born with a terrible stutter. He ran away to New York City when his speech impediment caused his friend to be killed. Tandy was a white teenager from a privileged upbringing who ran away because she thought her multimillionaire supermodel mother was too busy for her daughter with her career and social life. They met when Tyrone, who had been considering stealing Tandy's purse, returned it after someone else stole it first.

Cloak and Dagger received their powers from an experimental drug given to them against their will by agents of the Kingpin. It was later revealed that they were both actually mutants, and that the drug had simply awakened their latent abilities. Tyrone, as Cloak, gained the ability to access the "Darkforce Dimension" through his extra-dimensional cloak; those drawn into the cloak were stricken with fear and often rendered catatonic. The treatment also cured his stutter. Tandy, as Dagger, gained the ability to generate light, which could purge drugs from others' bodies and subdue the darkness that frequently threatened to overwhelm Cloak. The pair became romantically involved, though their relationship has had its ups and downs. They are allies of Spider-Man, the New Warriors, and the now-defunct "Marvel Knights" team.

There have been a number of attempts to launch a Cloak and Dagger series, but all of them ended in failure. The pair did much better as guest stars, appearing in the wide variety of titles. Most recently, they appeared on Runaways, a Marvel Comics cult hit.