| Chinnasekkadu | |
| Settlement Type: | Neighbourhood |
| Pushpin Map: | India Chennai#Tamil Nadu#India |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Chinnasekkadu (Chennai) |
| Coordinates: | 13.163°N 80.2614°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Chennai |
| Subdivision Type3: | Metro |
| Subdivision Name3: | Chennai |
| Subdivision Type4: | Zone |
| Subdivision Name4: | Madhavaram Zone No 3 |
| Subdivision Type5: | Ward |
| Subdivision Name5: | Chinnasekkadu (Ward 29) |
| Unit Pref: | Metric |
| Elevation M: | 31 |
| Population Total: | 15000 |
| Population As Of: | 2018 |
| 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: | 600068 |
| Area Code Type: | Telephone code |
| Area Code: | 044-2594 |
| Registration Plate: | TN-20-xxxx & TN-18-xxxx(new) |
| Blank1 Name Sec1: | Civic agency |
| Blank1 Info Sec1: | Corporation of Chennai |
| Blank2 Name Sec1: | Planning agency |
| Blank2 Info Sec1: | CMDA |
| Blank3 Name Sec1: | City |
| Blank3 Info Sec1: | Chennai |
Chinnasekkadu is a neighbourhood of Chennai in Chennai district in the state of Tamil Nadu, India. Chinnasekkadu used to be a town panchayat in Thiruvallur district. In 2011, Chinnasekkadu town panchayat was merged with Chennai Corporation. Chinnasekkadu comes under ward 29 in Zone 3(Madhavaram) of Chennai Corporation.
Chinnasekkadu is located at 13.17°N 80.26°W.[1] It has an average elevation of 11 metres (36 feet).
India census,[2] Chinnasekkadu had a population of 9744. Males constitute 52% of the population and females 48%. Chinnasekkadu has an average literacy rate of 75%, higher than the national average of 59.5%; with male literacy of 81% and female literacy of 69%. 12% of the population is under 6 years of age.