German (Deutsch [ˈdɔʏtʃ]) is a West Germanic language that derives most of its vocabulary from the Germanic branch of the Indo-European language family. A portion of German words are derived from Latin and Greek, and fewer are borrowed from French and English. Languages which are most similar to German include Afrikaans, Dutch, English, the Frisian languages, the continental Scandinavian languages and Luxembourgish. A Germanophone is a speaker of the German language either natively or by preference.

German is the most widely spoken (and official) language in Germany, Austria, Switzerland, the Italian province of South Tyrol (Italian: Alto Adige) and Liechtenstein; it is also an official, but not majority language of Belgium and Luxembourg. With slightly different standardized variants (German, Austrian, and Swiss Standard German), German is a pluricentric language. German is also notable for its broad spectrum of dialects, with many unique varieties existing in Europe and also other parts of the world. Due to the limited intelligibility between certain varieties and Standard German, as well as the lack of an undisputed, scientific difference between a "dialect" and a "language", some German varieties or dialect groups (e.g. Low German/Plautdietsch) are alternatively referred to as "languages" and "dialects".