Olympique de Béja (Arabic: الأولمبي الباجي), known as O Béja or simply OB for short, is a Tunisian football club based in Béja.

The club was founded in 1929 and its colours are red and white.

The club is currently playing in the Tunisian Ligue Professionnelle 1.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Players may hold more than one non-FIFA nationality.