The Clinique Saint-Jean (French) or Kliniek Sint-Jan (Dutch), meaning "Saint John Clinic", and historically known as the Saint-Jean-op-de-Poel hospital, is a private non-profit general hospital located in central Brussels, Belgium.

Founded in 1195,[1] it is Brussels' oldest hospital.

[2] Through the eight centuries of its existence, the Clinique Saint-Jean has been the founder of other major hospitals in the Brussels-Capital Region and of two nursing schools.

It is currently part of the Réseau Santé Louvain network of the Université catholique de Louvain (UCLouvain).

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