Sandman and The Sandman, in comics, may refer to a number of characters:
Sandman (DC Comics), denoting the various characters that have taken the mantle of the Sandman, including:
The Sandman (Vertigo), a comic book series written by Neil Gaiman and centers around the protagonist, Dream/Morpheus, the immortal anthropomorphic personification of dreams
Sandman (Wesley Dodds), a comic character from the 1930s who has made more recent appearances in:
Sandman Mystery Theatre
Sandman Midnight Theatre, in which Dodds meets Dream
Just Imagine... Sandman, Stan Lee and Walt Simonson’s version of Sandman
Sandy Hawkins, the current DC Sandman
Sandman (Marvel Comics), a supervillain who can transform his body into sand, and is an enemy of Spider-Man