Olayakunnam is a village in Pattukkottai tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Olayakunnam was 1,500 which includes 718 males and 782 females. Olayakunnam covers 851.01 ha area. Pincode of Olayakunnam is 614015.