"Denis Mukwege is the helper who has devoted his life to defending these victims. Nadia Murad is the witness who tells of the abuses perpetrated against herself and others.
"Each of them in their own way has helped to give greater visibility to wartime sexual violence, so that the perpetrators can be held accountable for their actions."
Mukwege has devoted his life to defending victims of war-time sexual violence. Murad has told the harrowing stories of the abuses perpetrated against herself and others. She was one of an estimated 3,000 Yazidi girls and women who were victims of rape and other abuses.
Last year's winner was the International Campaign to Abolish Nuclear Weapons, which was the 23rd organization to win the prize since it was established in 1901.
Other candidates included President Donald Trump, South Korean President Moon Jae-in and North Korean leader Kim Jong-un.
Also nominated was Pope Francis, who was a longshot because no pope has ever won the Nobel Peace Prize.
There were 331 nominees for the prize, according to the Nobel committee. Of that number, 216 were individuals and 115 were groups. It is the second-highest number of candidates, behind only the 2016 nominees.