REPUBLICAN PRESIDENTIAL CONTENDER, JOHN McCAIN
"We have come to the end of a long journey. The American people have spoken and they have spoken clearly.
"A little while ago, I had the honour of calling Senator Barack Obama to congratulate him on being elected the next president of the country that we both love.
"Every candidate makes mistakes and I'm sure I made my share of them. But I won't spend a moment of the future regretting what might have been.
"This campaign was and will remain the great honour of my life.
"And my heart is filled with nothing but gratitude for the experience, and to the American people for giving me a fair hearing before deciding that Senator Obama and my old friend Senator Joe Biden should have the honour of leading us for the next four years."
US PRESIDENT, GEORGE W BUSH
"Mr President-elect, congratulations to you. What an awesome night for you, your family and your supporters.
"I promise to make this a smooth transition. You are about to go on one of the great journeys of life. Congratulations and go enjoy yourself."
UK PRIME MINISTER, GORDON BROWN
"I would like to offer my sincere congratulations to Barack Obama on winning the presidency of the United States.
"I would also like to pay tribute to Senator McCain who fought a good campaign and has shown the characteristic dignity that has marked a lifetime of service to his country.
"The relationship between the United States and the United Kingdom is vital to our prosperity and security.
"Barack Obama ran an inspirational campaign, energising politics with his progressive values and his vision for the future. I know Barack Obama, and we share many values.
"We both have determination to show that government can act to help people fairly through these difficult times facing the global economy. And I look forward to working extremely closely with him in the coming months and years."
FRENCH PRESIDENT, NICOLAS SARKOZY
"I give you my warmest congratulations and, through me, those of all French people. Your brilliant victory rewards a tireless commitment to serve the American people.
"It also crowns an exceptional campaign whose inspiration and exaltation have proved to the entire world the vitality of American democracy.
"By choosing you, the American people have chosen change, openness and optimism. At a time when all of us must face huge challenges together, your election raises great hope in France, in Europe and elsewhere in the world."
KENYAN PRESIDENT, MWAI KIBAKI
"This is 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.
"We the Kenyan people are immensely proud of your Kenyan roots. Your victory is not only an inspiration to millions of people all over the world, but it has special resonance with us here in Kenya.
"I am confident that your presidency shall herald a new chapter of dialogue between the American people and the world at large."