Prieuré Saint-Jean-l'Évangéliste de Trizay, Benedictine priory in Trizay, France.

Prieuré Saint-Jean-l'Évangéliste de Trizay is a former Benedictine priory whose Romanesque church was built on an octagonal central plan; only the axial chapel with its cul-de-four apse and two smaller side chapels survive. The chapter house facade has four open windows and a door framed by stepped, jagged round arches on slender columns. The refectory and dormitory are restored, and the chapter house is covered by a six-part ribbed vault.

Founded in the 11th century by a lord of Tonnay-Charente, the priory remained connected to the Abbey of La Chaise-Dieu until the French Revolution. This long association shaped the monastery's spiritual and material life for centuries.

The chapter house facade, facing the vanished cloister, has four open windows and a door framed by stepped, jagged round arches on slender columns with leafy capitals. Inside, the 13th-century rib vault rests on plain round columns, and the walls bear carved crosses, including a Templar cross and a Santiago cross.

The complex stands about a kilometre outside Trizay, roughly ten kilometres southeast of Rochefort, beside the Canal de Pont-l'Abbé. The chapter house, dormitory and church remains are open to visitors, and the conventual buildings house a contemporary art centre. Restoration, funded by mayor and senator Michel Doublet, was completed in 2004.

The octagonal plan of the Romanesque church was found through a series of test trenches and is now marked on the ground as a platform slab, so visitors can walk the outline of a centralised building otherwise known only from its three surviving wall sections.