Artists including British pop band Florence and the Machine, US pop singer Colbie Caillat, pianist Herbie Hancock and singer-songwriter Elvis Costello will also perform at the December 11 show.
Washington said on Thursday he was "honoured to attend" the Nobel Peace Prize Concert "to help spread the message of global peace".
Last year, actor Will Smith and his actress wife Jada Pinkett Smith co-hosted the concert, honouring the 2009 laureate and Smith fan Barack Obama.
The winner of the 2010 Nobel Peace Prize will be announced in Oslo on October 8. The award is presented on December 10.
An Ohio amusement park ride that swings riders as high as 38m has been closed indefinitely after a cable snapped, injuring two visitors. Read More »
A former British tabloid reporter has been given a 10-month suspended prison sentence for his role in the phone hacking scandal that shook Rupert Murdoch's media empire. Read More »
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Fin24 users provide their own personal tips on how to save money instead of trying to keep up with the Joneses.
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