| Pillaiyarpatti | |
| — village — | |
| Coordinates | |
| Country | India |
| State | Tamil Nadu |
| District(s) | Thanjavur |
| Panchayat President | |
| Population | 6,309 (2001[update]) |
| Time zone | IST (UTC+05:30) |
Pillaiyarpatti (Tamil: பிள்ளையார்படடி) is a village in Thanjavur taluk of Thanjavur district, Tamil Nadu. It is located at a distance of 8 kilometres from Thanjavur and 3 kilometres from Vallam on the Thanjavur-Vallam road.
Pillaiyarpatti has a meaning in it. Pillaiyar = Vinayakar or Lord.Ganesh and patti = village This place is better known for vinayakar temple.
As per the 2008 census, Pillaiyarpatti had a population of 4856 with 2299 males and 2557 females. The sex ratio was 892 and the literacy rate, 83.57.