Ben Affleck will don Batman's cape and cowl in the Man Of Steel sequel.
Warner Bros announced that the 41-year-old actor-director will star as a new incarnation of the Dark Knight in a film bringing Batman and Superman together.
The studio said Ben will star opposite Henry Cavill, reprising his role as Superman from Man Of Steel.
Snyder said in a statement that Ben will provide a counter-balance to Henry's Superman.
Production is expected to begin in 2014, and the as-yet-untitled film is set for release in July 2015.