德国化 （Germanisation）指的是德语、德国人和德国文化的传播过程。在19至20世纪，德国化是德国自由主义思想的核心内容，这一时期也是自由主义和民族主义合作的时期。在语言学上，德国化是指外国语言借用德语词汇的情况。随着德国人口的增加，许多德国附近地区都经历过德国化的历程，特别是斯拉夫地区。

Germanisation (also spelt Germanization) refers to the spread of the German language, people and culture or policies which introduced these changes. It was a central plank of German liberal thinking in the 19th and 20th centuries, at a period when liberalism and nationalism went hand-in-hand. In linguistics, Germanisation also occurs when a word from the German language is adopted into a foreign language.