The Flemish Movement is an umbrella term which encompasses various political groups in the Belgian region of Flanders and, less commonly, in French Flanders. Ideologically, it encompasses groups which have sought to promote Flemish culture and the Dutch language as well as those seeking greater political autonomy for Flanders within Belgium. It also encompassed nationalists who seek the secession of Flanders from Belgium, either through outright independence or unification with the Netherlands.

Dutch is a West Germanic language, spoken by about 25 million people as a first language and 5 million as a second language and is the third most spoken Germanic language. In Europe, Dutch is the native language of most of the population of the Netherlands and Flanders. In South America, it is the native language of the majority of the population of Suriname, and spoken as a second language in the polyglot Caribbean island countries of Aruba, Curaçao and Sint Maarten. All these countries have recognised Dutch as one of their official languages, and are involved in one way or another in the Dutch Language Union. Dutch Caribbean municipalities have Dutch as one of the official languages too. Up to half a million native speakers reside in the United States, Canada and Australia combined, and historical linguistic minorities on the verge of extinction remain in parts of France and Germany.