Vellur is a village in the Orathanadu taluk of Thanjavur district in the Indian state of Tamil Nadu.

Vellur's boundaries include boroughs such as Periyakumilai, Mela theru, Keelatheru, Eda theru, Alathan kudikadu, Kothaiyakadu, Puthuvalavu and Therkukkadu.

Every year in the Tamil month of Chithrai the village celebrates the Car festival.

If any disputes arose that the village was unable to resolve by itself, the issue was passed onto the Nattamai, who would deliver a judgement.

Most people belong to the Pillai (Vellalar) and Kallar Community: Athiyaman, Kandiyar, Vijayathevar and Nattar, Poyuntar.