| Kattankulathur | |
| Settlement Type: | Town |
| Pushpin Map: | India Tamil Nadu#India |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Tamil Nadu, India |
| Coordinates: | 12.808°N 80.029°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Chengalpattu |
| Subdivision Type3: | Taluk |
| Subdivision Name3: | Chengalpattu |
| Subdivision Type4: | Metro |
| Subdivision Name4: | Chennai Metropolitan Area |
| 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: | Chengalpattu-603203 |
| Area Code Type: | Telephone code |
| Area Code: | 044 |
| Registration Plate: | TN-19 |
| Blank1 Name Sec1: | Nearest big city |
| Blank1 Info Sec1: | Tambaram |
| Blank2 Name Sec1: | Lok Sabha constituency |
| Blank2 Info Sec1: | Chengalpattu |
| Blank3 Name Sec1: | Vidhan Sabha constituency |
| Blank3 Info Sec1: | Thiruporur |
Kattankulathur is a suburb of Chennai, India, located on the southern side of the city in Chengalpattu district of Tamil Nadu.[1] It comes under the Maraimalai Nagar municipality in the Chengalpattu taluk and within Chennai Metropolitan Area.
Kattankulathur is located in the southern part of Chennai city. it is located along the busy GST Road on Chennai-Trichy National Highway. The neighborhood is served by the Kattankulathur railway station, which is about 20 minutes from Chennai Tambaram. The Chennai Suburban Railway operates a suburban railway service from Chennai Beach. It is well connected to other parts of the city by road. All MTC buses towards Maraimalai Nagar pass via Kattankulathur.
SRM Institute of Science and Technology is located in Kattankulathur.