The European Plain or the Great European Plain is a plain in Europe and is a major feature of one of four major topographical units of Europe - the Central and Interior Lowlands. It is the largest mountain-free landform in Europe, although a number of highlands are identified within it.

In geography, a plain, commonly known as flatland, is a flat expanse of land that generally does not change much in elevation, and is primarily treeless. Plains occur as lowlands along valleys or at the base of mountains, as coastal plains, and as plateaus or uplands. Plains are one of the major landforms on earth, being present on all continents and covering more than one-third of the world's land area. Plains in many areas are important for agriculture. There are various types of plains and biomes on them.