Kattankudy (Tamil: காத்தான்குடி, Sinhala: කාත්තාන්කුඩි; also transliterated as "Kathankudy") is a township near the city of Batticaloa on the eastern coast of Sri Lanka.

It covers land area of approximately 2.56 km2 (0.99 sq mi) and 1.33 km2 (0.51 sq mi) of inland waterways, the division accounts for 0.15% of the district's total land area.

It took place when around 30 armed persons raided four mosques in the town of Kattankudy, where over 300 people were prostrating in Isha prayers.

The attack is attributed to LTTE by the Sri Lankan Government, although the former denied their involvement in the massacre, and have never retracted that denial.

[4] When the 2004 tsunami hit, approximately 108 people died in Kattankudy and 93 persons are still listed as missing.