Bisinus, Basinus, Besinus, or Bisin (Lombardic: Pisen) was the king of the Thuringii (fl. c. 460 – 506/510), or possibly a ruler of the Civitas Tungrorum, known only from fragmentary later records, with different variant forms.
According to Gregory of Tours, Bisinus gave refuge to Childeric I, the Frankish king who was exiled by his people. After eight years under Bisinus' protection, Childeric returned to Tournai. Bisinus's wife Basina left him and joined Childeric.
- (in Latin) Gregorius Turonensis, Historiarum_Francorum Libro III par.4
- Cawley, Charles, Medieval Lands - THURINGIA, Medieval Lands database, Foundation for Medieval Genealogy[failed verification][self-published source?]