| Sengai, Thamarankottai | |
| Settlement Type: | Street |
| Pushpin Map: | India Tamil Nadu#India |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Tamil Nadu, India |
| Coordinates: | 10.43°N 79.32°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Thanjavur |
| Subdivision Type3: | Taluk |
| Subdivision Name3: | Pattukkottai |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 614613 |
| Area Code Type: | Telephone code |
| Area Code: | 91 4373 |
| Registration Plate: | TN 49 |
| Official Name: | Thamarankottai |
Sengapaduthankadu is a hamlet in Thamarankottai village, which is an agricultural village in Cauvery Delta area. It comes under Pattukkottai taluk and Thanjavur district in Tamil Nadu, India. Pattukkottai and Adirampattinam are the nearby major towns. It is surrounded by many villages Thuvarankurichi, Mannangadu, Parakakalakottai, Thambikottai, Palanjur, Narasingapuram and Sundarannayakipuram.
Sengapaduthankadu in Thamarankottai is the birthplace of the great poet Pattukkottai Kalyanasundaram .. The place is near to the sea. Thamarankottai reserved forest is located near to this hamlet.
Manora (a big tower used by olden kings to guard the entry against enemies) is nearby this place
The main occupation in this village is agriculture – rice, groundnuts, coconut, and sesame are cultivated. Above all, peoples are good hearted, helpful, polite, sportive and educated.