War of the Green Lanterns is a 2011 10-issue American comic book crossover storyline published by DC Comics that spans the Green Lantern, Green Lantern Corps, and Green Lantern: Emerald Warriors series. Issues in the crossover were written by each of the various series' writers: Geoff Johns, Tony Bedard, and Peter Tomasi respectively, and drawn by Doug Mahnke, Tyler Kirkham, and Fernando Pasarin.

Green Lantern is an ongoing American comic-book series featuring the DC Comics heroes of the same name. The character's first incarnation, Alan Scott, appeared in All-American Comics #16, and was later spun off into the first volume of Green Lantern in 1941. After 38 issues, that series was cancelled in 1949. When the Silver Age Green Lantern, Hal Jordan, was introduced, the character starred in a new volume of Green Lantern starting in 1960.