| Padappai | |
| Native Name Lang: | ta |
| Settlement Type: | town |
| Pushpin Map: | India Chennai#Tamil Nadu#India |
| Pushpin Map Caption: | Location in CMA, India |
| Coordinates: | 12.887°N 80.0213°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Kanchipuram |
| Subdivision Type3: | Metro |
| Subdivision Name3: | Chennai City |
| Unit Pref: | Metric |
| Population Total: | 8285 |
| 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: | 601301 |
| Registration Plate: | TN-11 |
Padappai is a town near Chennai, India. It is a small town developing fast in Chennai suburbs about 12 km from Tambaram connected to Bangalore highway and near Oragadam SIPCOT & many big companies like Nissan, Appolo tyres, Alstom T&D, Tii Techno Testing Services PVT LTD, Infac India are few companies near this small town.
The road from Vandalur to Walajabad via Oragadam is known as Padappai road that connects Chennai and Kanchipuram, an alternate road for Chennai Bangalore highway NH 4. Padappai road and Sriperumpudur (NH4) to Singaperumalkoil (NH45) road meets at Oragadam, known as "Oragadam kootu road".
The nearby villages in Padappai road (Vandaloor to Walajabad) are Athanancherry, Panapakkam, Vanchuvancherry, Umaianparangcherry, Cherrappanancherry, Kuzhangalacherri, Nariyampakkam, KaaranaiThangal, Karasangal, Oragadam, Ezhichur, Pandruti, Varanavasi, Mettupalayam, Aarambakkam, Uthukkadu, Vembakkam, Devariyampakkam, Kunnavakkam, Thalampattu, Aloor, Eraiyamangalam, Vattambakkam, Eraiyur, Ammanambakkam Vaipur (Vaipoor), Salamangalam, Sirumathur, Samadhuvapuram, and Mannivakkam.
Padappai is the name from ancient Tamil which means "Beautiful Flower Garden", Bunch of edibles. Padappai is surrounded by many nursery gardens where you can get variety of samplings for gardens.