B-Classic is a festival in and around Tongeren. It began under the name Basilicaconcerten Tongeren (taking place mostly in the Tongeren Basilica) and later adopted the names Basilica Festival van Vlaanderen and Festival van Vlaanderen – Limburg. The festival has been active for the past half-century. B-Classic is an international classical music festival as well as a social laboratory and an artistic breeding ground for musicians. It gives participating musicians the chance to evaluate, reconsider and develop their artistic practice. To that end, it uses its 'pressure cooking' formula, in which musicians have to realise short-term artistic collaborations. B-Classic puts classical music in a contemporary context. It focuses on live experience and cross-pollination.

The festival is a branch of Flanders Festival.