Rajapalaiyam taluk is a taluk of Virudhunagar district of the Indian state of Tamil Nadu. The headquarters of the taluk is the town of Rajapalaiyam.
According to the 2011 census, the taluk of Rajapalaiyam had a population of 347,318 with 173,202 males and 174,116 females. There were 1005 women for every 1000 men. The taluk had a literacy rate of 74.84. Child population in the age group below 6 was 15,736 Males and 14,890 Females.