Supergirl is the name of several fictional superheroines appearing in American comic books published by DC Comics. The original, current, and most well known Supergirl is Kara Zor-El, the cousin of superhero Superman. The character made her first appearance in Action Comics #252 and was created by Otto Binder and Al Plastino.

Kara Zor-El (Supergirl) also known by her adoptive names of Linda Lee Danvers, Kara Kent, Linda Lang, and Kara Danvers, is a superheroine appearing in American comic books published by DC Comics. She was created by Otto Binder and designed by Al Plastino. Danvers first appeared in the story "The Supergirl from Krypton" in Action Comics #252. Kara is the biological cousin of Kal-El, who went on to adopt the name of Clark Kent and the superhero identity Superman. Her father, Zor-El, is the brother of Superman's father, Jor-El. During the 1980s and the revolution of the Modern Age of Comics, Superman editors believed the character's history had become too convoluted, thus killing Supergirl during the 1985 Crisis on Infinite Earths event and retconning her out of existence.