Warner Independent Pictures (WiP) will handle the domestic release while Warner Bros Pictures International (WBPI) will release around the world.
Leila Conners-Petersen and Nadia Conners co-directed 11th Hour, which secured a special screening slot on the Croisette and explores man's impact on earth and what can be done to change our course.
The film features contributions by such luminaries as former Soviet Prime Minister Mikhail Gorbachev, scientist Stephen Hawking, former head of the CIA R James Woolsey, and sustainable design experts William McDonough and Bruce Mau.
DiCaprio narrates and co-wrote the project with Conners-Petersen and Conners, and produced alongside Chuck Castleberry, Brian Gerber and Conners-Peterson.
'This film is a compelling exploration of not only the critical importance of addressing climate change, but also the myriad global challenges that we face today, presented with wide-ranging research and insight,' WBPI president of distribution Veronika Kwan-Rubinek and president of marketing Sue Kroll said.
'We are delighted to work with Leonardo, Leila and Nadia to bring this remarkable vision to international audiences.'
'Having worked with Leonardo in the past, I know how much he cares about bringing issues of the environment to the forefront of our consciousness,' WiP president Polly Cohen said. 'We're pleased to join with Warner Bros Pictures International in helping to get this message out.'