The Indigo Tribe is a fictional organization that appears in DC Comics publications, primarily those of the Green Lantern series. In the DC Universe, it is one of the seven major groups known to comprise the Lantern Corps. The group was created by comic book writer Geoff Johns and comic book artist Ethan Van Sciver. It made its debut in the issue #25 of Green Lantern in December 2007.

The Sinestro Corps, occasionally known as the Yellow Lantern Corps, is a supervillainous group and analog to the Green Lantern Corps in the DC Universe. They are led by Sinestro, and derive power from the emotional electromagnetic spectrum of fear.