| Vallakottai | |
| Settlement Type: | town |
| Pushpin Map: | India Tamil Nadu |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Tamil Nadu, India |
| Coordinates: | 12.883°N 79.9347°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Kanchipuram |
| Parts Type: | Talukas |
| Parts: | Sriperumbudur Taluk |
| 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: | 602105 |
Vallakottai is a town near Chennai, India. It is situated on the highway between Sriperumbudur and Singaperumalkoil near Chengalpattu.
The Vallakottai Subramaniyaswami temple is in Vallakottai. The Subramaniya Swamy idol in this temple is the tallest Lord Muruga statue in India. People from various places visit this temple during festival days.
Frequent bus facility is available to the village from Tambaram and Sriperumbudur.