Olaiyur is a Village Panchayat at Udayarpalayam taluk of Ariyalur district, Tamil Nadu, India.

Temperatures during the summer reach maximum 38 and minimum of 22 degrees Celsius.

Olaiyur is the major sugarcane producing village in the District.

The village hosts Post office, TNEB Sub Station but lacks a primary health centre.

This article related to a location in Ariyalur district, Tamil Nadu, India is a stub.