| Thirumangalakudi | |
| Native Name: | Aduthurai |
| Settlement Type: | village |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Tamil Nadu, India |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Thanjavur |
| Subdivision Type3: | Taluk |
| Subdivision Name3: | Thiruvidaimarudur |
| Established Title: | school = Mathar Mandram high school, Bright future nursery & primary school, Aandavar primary school |
| Leader Title: | Panchayat President |
| Unit Pref: | Metric |
| Population Total: | 7193 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code: | 612102 |
Thirumangalakudi is a village near Aduthurai in the Thiruvidaimarudur taluk of Thanjavur district in Tamil Nadu, India. Prananadeswarar Temple, a Hindu temple dedicated to Shiva, is located here.
According to the 2001 census, Thirumangalakudi had a population of 7,500 with 3,474 males and 3,719 females. The sex ratio was 1,071. The village had a literacy rate of 90. Thirmangalaguri has 5 mosques and size-able amount of muslim population, who peacefully co-exist with fellow Hindus.