German Chancellor Angela Merkel, in a message sent to Obama on Wednesday.
"Your re-election is a clear choice in favor of an America that is open, unified, completely engaged in the international scene and conscious of the challenges facing our planet: peace, the economy and the environment."
French President Francois Hollande, in a message sent to Obama on Wednesday.
"I think he's a very successful US president and I look forward to working with him in the future.... There are so many things that we need to do: we need to kick start the world economy and I want to see an EU-US trade deal."
British Prime Minister David Cameron in comments to the press on Wednesday.
"Very happy about the re-election of President Obama."
European Council President Herman Van Rompuy of Belgium, on Twitter.
"The United States are a key strategic partner of the European Union and we expect that the collaboration that has been established in the past four years will continue, allowing us to strengthen our bilateral relationship and to tackle global problems, including the areas of security and finance."
European Council President Herman Van Rompuy of Belgium and European Commission President Jose Manuel Barroso of Portugal in a Wednesday statement.
"On behalf of the European Parliament, I congratulate Barack Obama on being re-elected as President of the United States of America. The European Parliament looks forward to building on our strong and comprehensive trans-Atlantic relationship with President Obama. What unites the European Union and the United States of America is far greater than what divides us. The EU and the US are the world's closest allies: our partnership is based on a wide range of common values and shared interests."
European Parliament President Martin Schulz in a Wednesday statement.
"I think ... it is always easier to establish a closer work relationship with the US president when he's starting his second term. During his first mandate, the president is normally focusing on turbulent domestic issues."
Euro Group President Jean-Claude Juncker of Luxembourg told reporters on the sidelines of a conference in Singapore.
"We have worked very well with President Barack Obama's administration in the area of foreign affairs and we still have lots of shared plans."
German Foreign Minister Guido Westerwelle in New York where he is for several meetings at the United Nations.
"We are charged with taking on the global challenges and threats to freedom, peace, prosperity and our environment. To those ends, Germany will continue to serve reliably alongside the United States of America."
German President Joachim Gauck in a message sent to Obama on Wednesday.
"I think this is a good sign for US-European relations. In his thoughts and foreign policy approach (Obama) is certainly closer to us than an unfamiliar American president would have been, one who would have been dependent on the Tea Party people, the right-wing conservatives."
Former German Foreign Minister Hans Dietrich Genscher on German television on Wednesday.
