The Warner Bros hierarchy, eager to catch up with Marvel Studios’ successful character cross-pollination, has greenlit the superhero mash-up.
Snyder, who begins work imminently on Batman Vs Superman, will direct the Justice League film.
It is understood Henry Cavill, Ben Affleck and Gal Gadot will reprise their roles as Superman, Batman and Wonder Woman.
According to reports the project is in development but unlikely to emerge before 2018.
Batman Vs Superman is scheduled to open on May 6, 2016.