The Hangover actor will produce American Sniper through his production company, 22nd & Indiana, says The Hollywood Reporter.
The film is an adaptation of Navy SEAL Chris Kyle's book American Sniper: The Autobiography of the Most Lethal Sniper in US Military History.
Jason Dean Hall will pen the screenplay, while Andrew Lazar and Peter Morgan will produce with Cooper.
Bradley Cooper will most likely also star in the project.
The original book follows Texas-born Kyle, who held the record for the most sniper kills for the US. It gives first-person accounts of a sniper's work, along with passages from Kyle's wife, who saw her husband's focus change from her to war.
Cooper will star in a number of upcoming projects, including road trip movie Hit & Run and thriller The Watch.
Watch Bradley Cooper in the trailer for The Words below: