The following are real-life countries or territories in Europe which do not exist in Renaissance Kingdoms in any way at all. That is to say, no ingame territories exist there.
1 Collectivité territoriale of the French Republic.
2 The entire island - the Republic of Cyprus, the Turkish Republic of Northern Cyprus, and the British Sovereign Base Areas of Akrotiri and Dhekelia.
3 Overseas territory of the United Kingdom.
4 Exclaved oblast of the Russian Federation.
5 Autonomous region of the Italian Republic.
6 Integral part of the United Kingdom.
The main reasons that these territories have not been coded is that the game has not been translated into that nation's language, there is insufficient demand, it was not discovered in 1456, or it is too small to have any kind of stable economy. People from most of these nations are lobbying for representation.
All other nations and territories in Europe proper are represented in some way ingame.