Tirumangalakottai East is a village in the Orathanadu taluk of Thanjavur district, Tamil Nadu, India.

As per the 2001 census, Tirumangalakottai East had a total population of 2742 with 1389 males and 1353 females. The sex ratio was 974. The literacy rate was 67.55.

Tirumangalakottai West

• "Primary Census Abstract - Census 2001". Directorate of Census Operations-Tamil Nadu. Archived from the original on 29 August 2009.