German Chancellor Angela Merkel is "convinced that Europe and the United States will work closely and in a spirit of mutual trust together to confront new dangers and risks and will seize the opportunities presented by our global world".
Kenyan President Mwai Kibaki called Obama's election "a momentous day not only in the history of the United States of America, but also for us in Kenya. The victory of Senator Obama is our own victory because of his roots here in Kenya. As a country, we are full of pride for his success."
Scotland's First Minister Alex Salmond sent a message to Mr Obama, which read: "On behalf of the people of Scotland, I send you my heartfelt congratulations on a wonderful and historic election victory - it ushers in a new era of hope for the United States and its role in the world. This was a victory for optimism over pessimism, for hope over fear."
South African president Kgalema Motlanthe said: "Africa ... today stands proud of your achievements."
Australian prime minister Kevin Rudd said: "Senator Obama's message of hope is not just for America's future, it is also a message of hope for the world as well. A world which is now in many respects fearful for its future."