The Willemsfonds, named after Jan Frans Willems, is a non-profit cultural organisation founded in the 19th century to promote Flemish culture and language in Belgium. In order to achieve this goal, the organisation encouraged Flemish folk song, organised linguistic games and published inexpensive Flemish books. In addition, the organisation established general libraries.
Nowadays, the Willemsfonds is still a volunteer organisation and a meeting place for cultural activities. It seeks to promote a dialogue between people in order to allow them to form their own opinion. The Willemsfonds is of liberal inspiration, which distinguishes it from the socialist Vermeylenfonds and the Catholic Davidsfonds.