Batman: The Dark Knight Strikes Again, also known as DK2, is a 2001–2002 DC Comics three-issue limited series comic book written and illustrated by Frank Miller and colored by Lynn Varley, featuring the fictional superhero Batman. The series is a sequel to Miller's 1986 miniseries The Dark Knight Returns. It tells the story of an aged Bruce Wayne who returns from three years in hiding, training his followers and instigating a rebellion against Lex Luthor's dictatorial rule over the United States. The series features an ensemble cast of superheroes including Catgirl, Superman, Wonder Woman, Plastic Man, Green Arrow, The Flash, and the Atom.

Frank Miller is an American comic book artist, comic book writer, and screenwriter known for his comic book stories and graphic novels such as his run on Daredevil, for which he created the character Elektra, and subsequent Daredevil: Born Again, The Dark Knight Returns, Batman: Year One, Sin City, and 300.