Kadalangudi is a village in the Kudavasal taluk of Tiruvarur district in Tamil Nadu, India.

As per the 2011 census, Kadalangudi had a population of 1,406 with 724 males and 682 females. The sex ratio was 942. The literacy rate was 80.8.

• "Primary Census Abstract - Census 2001". Directorate of Census Operations-Tamil Nadu. Archived from the original on 17 February 2011.