Swayambachanallur is a village in Thiruvaiyaru tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Swayambachanallur was 666 which includes 339 males and 327 females. Swayambachanallur covers 25.58 ha area. Pincode of Swayambachanallur is 613204.