A Europeanist (similar to Pro-European or the more pejorative Europhile or Eurooptimist) is a person or group who favours the European Union and seeks to uphold or develop it through supporting European integration and the aims of the European Union. Nearly all support supranational union in Europe.

Europeanists believe that, in the present unipolar world where America stands unabashingly as the world's first and sole hyperpower, that European unity makes more sense than ever, making a united and independent Europe more and more necessary, while a divided one would bring disadvantages in economical, cultural, political, social, scientific, diplomatic, military and other fields.

However positive the EU benefits are, such a "quality / cost" rating is not generally the only aspect that motivate them, as they also feel they belong together to a common community of people.

They are usually not entirely satisfied with the organization and working of the EU institutions, but they think the solution is not in destroying what has been built, but on the contrary to push for more unity, transparency and democracy.

Most view the as-yet unratified EU Constitution as a mixed bag. Although welcoming the steps forward towards greater integration, they regret that so little power has been given to the European Parliament and generally feel that more could have been done to address the democratic deficit that has disconnected many Europeans from the European Union. Regardless of this, most will support it rather than risk encouraging Euroscepticism.

A small few Europeanists have been accused of Anti-Americanism in the past for their doubts about the sustainibility of NATO, or at least their desire to see it become a more equal partnership between the US and the EU. They resent what they feel is American 'sabotage' of attempts to strengthen European common defence through organisations such as the increasingly-defunct Western European Union.

Europeanists generally support the idea of a single European Union seat at the United Nations Security Council to replace the seats occupied individually by Britain and France as part of the development of the European Union's Common Foreign and Security Policy.

Notable Europeanists include Dr. Mário Soares.