Johansson released her debut album, Anywhere I Lay My Head, in May
Actress Scarlett Johansson is to co-host this year's Nobel Peace Concert, which will be headlined by Diana Ross.
The event is to be held in Oslo, Norway on 11 December, which is the day after the Nobel Prizes are presented.
Also on the bill are Canadian musician Feist, US country singer Dierks Bentley and Nigerian performer Seun Kuti.
Johansson's "compassion and influence" would help to spread a "message of peace", Nobel committee member Geir Lundestad told the Associated Press.
Johansson said she was "truly honoured" to have been invited, and paid tribute to the winner of this year's Nobel Peace Prize, Martti Ahtisaari.
The former Finnish president received the award for his work in mediating conflicts around the world.
"His tireless efforts to promote peace on a global scale are an inspiration to us all," Johansson said in a statement.
Another co-host for the concert, which also features Mexican singer-songwriter Julieta Venegas and Norway's Marit Larsen, will be announced in the next few weeks.
Last year's event was presented by Kevin Spacey and Uma Thurman.