The Cathedral of St. Mary (Tamil: புனித மரியன்னை பேராலயம், romanized: Puṉita Mariyaṉṉai Pērālayam; Sinhala: ශාන්ත මරියා ආසන දෙව් මැදුර Śānta Mariyā Āsana Dev Mædura) is a Cathedral of the Roman Catholic Diocese of Batticaloa in Puliyanthivu.

The cathedral is a landmark and Catholic historical icon in the district of Batticaloa, Sri Lanka.

[1] It was co- cathedral under Diocese of Trincomalee-Batticaloa and became a cathedral after the creation of Diocese of Batticaloa in 2012.

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